Entry Type ID Date Applicable Rating System Primary Credit Inquiry (LIs) Ruling (LIs) Related Addenda/LIs Related Resources Campus Applicable Internationally Applicable Country Applicability Reference Guide (Addenda) Page (Addenda) Location (Addenda) Description of Change (Addenda) "Reference Guide Correction" "100000572" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "243" "Column 1" "[Add new section before Exemplary Performance section]\nPartial Credit\nIf the requirements are met in only 50% of the walls (by area), half credit can be awarded.\n" "Reference Guide Correction" "100000580" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "249" "Top of page, within Notice to Vendors" """Notice to Vendors: [The company] prefers to purchase products that contain"" change to ""Notice to Vendors: [The company] is required to purchase products that contain""" "Reference Guide Correction" "100000571" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "242" "Column 1" "[Add new paragraph to beginning of Approach and Implementation section]\n\n""The requirements of MR 1.4 only apply to exterior framing, although material-efficient framing techniques are strongly encouraged for interior framing.""\n" "Reference Guide Correction" "100000573" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "243" "Exemplary Performance" """Projects that implement advanced framing measures worth more than 3 points can take credit for the additional measures, to be counted under Innovation & Design 3."" change to ""Projects that install measures from MR 1.4 such that more than 3 points are earned may be awarded exemplary performance points, to be counted under Innovation & Design 3.""" "Reference Guide Correction" "100000574" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "245" "Column 1" "[Add new paragraphs to the end of Approach & Implementation section]\n\n""This credit should only be awarded if the walls, roof, and floor are all fabricated off-site. The credit can alternatively be awarded for the use of panelized walls, roof trusses, and floor trusses throughout the home.\n\nThis credit should be awarded to homes that install only pre-cut SIPs in the walls, roof, and floor. If SIPs are cut on-site, or only used in walls and/or the roof, no points should be awarded for this credit; points may be awarded in MR 1.4 instead.\n\nThis credit should be awarded to homes with concrete panelized wall systems, if they are formed and poured off-site.""\n" "Reference Guide Correction" "100000575" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "248" "Emissions specifications column, 3rd row" """Carpet & pad: all carpet & pad complies with Carpet & rug Institute Green Label Plus program\nHard flooring: automatic 1/2 point for 100% hard surface flooring.\nHard flooring: additional 1/2 point for using a product that is SCS FloorScore certified."" change to:\n\nCarpet & pad: 1/2 point if all carpet complies with Carpet & Rug Institute (CRI) Green Label Plus program and all pad complies with CRI Green Label program.\nHard flooring: 1/2 point if 90% of the floor area is hard-surface flooring.\nHard flooring: 1/2 point for using a product that is SCS FloorScore certified for 90% of floor area.""\n\n" "Reference Guide Correction" "100000584" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "253" "Column 1, 3rd bullet" """Any tropical wood products must be identified on invoices as ""FSC Pure"" or ""FSC Mixed""; wood products identified as ""FSC Recycled"" or ""FSC Recycled Credit"" do not meet this requirement."" change to ""Any tropical wood products must be FSC certified. Certification under any of the FSC labels (e.g., FSC Pure, FSC Mixed, FSC Mixed [NN]%, FSC Recycled) is acceptable.""" "Reference Guide Correction" "100000585" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 1, 1st paragraph under Local Production" """Early in the design process... extracted, harvested, recovered, or manufactured locally..."" change to ""Early in the design process... extracted, harvested, recovered, and manufactured locally...""" "Reference Guide Correction" "100000586" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 1, 2nd paragraph" """...and check emissions levels on product labels."" change to ""...and check emissions levels on product labels. Pre-finished surfaces are assumed to meet the emissions specification.""" "Reference Guide Correction" "100000587" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 2" "[Add new paragraph just after 1st paragraph]\n\n""For example, in order to earn credit for the component ""Interior Walls AND ceiling AND millwork"", at least 90% of all paints and coatings used on these surfaces must meet the requirements.""\n" "Reference Guide Correction" "100000588" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 2, 3rd bullet" """100% of the floor area must meet the Low-Emissions Materials requirements..."" change to ""90% of the floor area must meet the Low-Emissions Materials requirements...""" "Reference Guide Correction" "100000589" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 2" "[Add new paragraph just before 3rd paragraph that starts ""Detailed calculations are not...""]\n\n""For this calculation, all garage floor area (for both conditioned and unconditioned garages) should be excluded.""\n" "Reference Guide Correction" "100000590" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Column 2" "[Add new paragraph just before 4th paragraph that starts ""When calculating distances...""]\n\n""Both ICFs and SIPs should be treated as two different components - framing and insulation. If the requirements for either or both components are met, points should be awarded accordingly.""\n" "Reference Guide Correction" "100000592" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "259" "Column 1, under entry for Carpet & Rug Institute entry" """...information about the CRI Green Label Plus program."" change to ""...information about the CRI Green Label Plus and Green Label programs.""" "Reference Guide Correction" "100000591" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "255" "Exemplary Performance" """Projects that use more than 16 of the options in Table 1 and earn more than the maximum 8 points can earn additional points, to be counted under Innovation & Design 3."" change to ""Projects that install more than 16 of the measures listed in MR 2.2 should be awarded exemplary performance points, to be counted under Innovation & Design 3.""" "Rating System Correction" "100000657" "2009-01-15" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "80" "within ""Floor: Flooring"" component" "the Low-Emissions requirement should be changed from ""Hard flooring: additional 1/2 point for 100% hard surface flooring"" to\n""Hard flooring automatic: 1/2 point for 90% hard surface flooring""" "Rating System Correction" "100000658" "2009-01-15" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "81" "figure 6" "the Example Notice to Wood Products Suppliers should read: ""Notice to\nVendors: [The company] prefers to purchase wood products that are certified according to the\nguidelines of the Forest Stewardship Council (FSC). [The company] also prefers not to use any\ntropical wood or wood products. If any tropical wood or wood products are supplied, they must\nbe FSC certified. Please provide the country of manufacture of each product you expect to supply\nto us. Also please provide a list of FSC-certified products you can supply.""" "Rating System Correction" "100000659" "2009-01-15" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "81" "Table 25" "change first column heading from ""Component"" to ""Types of Paints and Coatings""" "Rating System Correction" "100000661" "2010-01-01" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "82" "Table 26" "the entry for ceramic tile adhesive is missing. The requirement for ceramic tile adhesives (from LEED-NC) is 65 g/L." "Reference Guide Correction" "100000583" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "250" "Under Architectural applications" "[add new row]\n""Ceramic tile adhesives 65""\n\n" "Reference Guide Correction" "100000581" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "249" "Table 2, Column 1 heading" """Component"" change to ""Types of Paints and Coatings""" "Reference Guide Correction" "100000582" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "249" "Table 2, Column 1, 1st row" """Architectural paints, coatings, and primers applied to interior walls and ceilings"" change to ""Architectural paints, coatings, and primers applied to interior elements""" "Rating System Correction" "100000660" "2009-01-15" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "81" "Table 25" "within first column, first row should be changed from ""Architectural paints,\ncoatings, and primers, applied to interior walls and ceilings"" to ""Architectural paints, coatings,\nand primers, applied to interior elements""" "Reference Guide Correction" "100000576" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "248" "Table 1, row 10 (for interior walls, etc.)" """Use products that comply with all applicable standards in Table 25."" change to ""Use products that comply with all applicable standards in Table 2.""" "Reference Guide Correction" "100000577" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "248" "Table 1, row 15, 2nd column" """Trim"" change to ""Interior trim""" "Reference Guide Correction" "100000578" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "248" "Table 1, row 16 (""Other: Adhesives and Sealants"")" """Use products that comply with all applicable standards in Table 26."" change to ""Use products that comply with all applicable standards in Table 3.""" "Reference Guide Correction" "100000579" "2009-10-27" "Homes" "MRc2: Environmentally Preferable Products " "None" "None" "Homes, 2008 edition" "248" "Table 1, row 20, 2nd column" """Insulation"" change to ""Cavity insulation (i.e. not rigid foam insulation)""" "LEED Interpretation" "10195" "2012-04-01" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products" "Is wood that is harvested from Hawaii considered tropical?" "Wood harvested from Hawaii is not considered tropical for the purposes of MR 2.1. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "10196" "2012-04-01" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products" "Can credit for low-emissions insulation be awarded if all cavity insulation is verified as ""conforming to California Specification 01350 for classroom and office scenarios""? What if the insulation is verified as meeting the GREENGUARD Children and Schools certification?" "If a product is verified as meeting the GREENGUARD Children and Schools certification or conforming to CA Department of Public Health Standard Method Section 01350, it satisfies the credit requirements for low-emissions insulation. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "10197" "2012-04-01" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products" "Do Providers or Green Raters have discretion to deny certification to a project on the basis that a) the home poses a safety or human health concern, or 2) the intent of ID 2 (durability planning) was not met?" "Yes. If the verification team is uncomfortable approving a project for certification because it poses a safety or human health risk, this is grounds for denying certification. In a case like this, please provide USGBC staff with the address of the project, project team contact information, and a brief explanation outlining the relevant prerequisite and reasons for denying certification. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "1465" "2006-04-01" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "We are using a combination of fiberglass batts and cellulose insulation. These materials have different recycled contents. How should we evaluate overall recycled content?" "In order to earn 0.5 pt for recycled-content insulation, 90% or more of the bulk insulation products installed in the home (calculated as a percentage of the total surface area -- walls, roof, floor -- covered by insulation) must have a minimum of 20% recycled content. No weighted averaging may be used (i.e., the requirement is not met if >10% of the insulation used contains recycled content less than 20%, regardless of the recycled content of the remainder of the insulation).\n \nThe reason for this ruling is that the inclusion of recycled content in new products has not been shown consistently to result in superior environmental performance, and increased percentages of recycled content do not correlate predictably with higher levels of environmental performance. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1738" "2007-03-23" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is credit available for installing driveways with ""grass pave"" and other permeable surfaces?" "No credit is awarded in MR 2.2 for permeable surfaces; permeable driveways are addressed in SS 4.1. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1776" "2007-06-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is wood that is harvested within 500 miles considered \'local\'?" "The term \'harvested\' is equivalent to \'extracted\' for the purposes of MR 2.2. If a wood product is harvested, processed, and manufactured (if applicable) within 500 miles, it can be used to meet the ""Local Production"" specification. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1778" "2007-05-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If only 90% of a component consists of a product that meets the Local Production requirements, can credit be awarded?" "Yes - for all of the components in MR 2.2, credit may be awarded if at least 90% of the component meets the Local Production requirements. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1784" "2007-06-04" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can tropical lumber satisfy MR 2.1 if it is certified by a sustainable harvesting certification program other than FSC? " "No. If tropical lumber is used that is not FSC certified, the prerequisite is not met and the project cannot be certified. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1809" "2007-07-07" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is credit available for using ""rapidly renewable materials"", using the definition from LEED-NC?" "No credit is awarded for the general category of ""rapidly renewable materials"". CIRs may be submitted for individual ""rapidly renewable"" materials/products. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1810" "2007-07-07" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Roof, Floor, Wall / Sheathing component, can the Low Emissions specification be met by using sheathing that with no added urea-formaldehyde?" "No credit should be awarded for sheathing with no added urea-formaldehyde. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1812" "2007-07-07" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is credit available for using low-VOC paint on exterior surfaces?" "No credit should be awarded for the use of low-VOC paint on the exterior of the building. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1825" "2007-06-25" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "In gut-rehab projects, if individual components (e.g. flooring, framing) are maintained and refurbished, can this be considered ""reclaimed"" material?" "Yes, maintaining existing material can be considered equivalent to installing reclaimed material. However, credit may only be awarded if 90% of the component (45% in the case of flooring) in the final LEED home meets the credit requirement. For example, if all of the original interior wall framing in a home is maintained, but the final LEED home includes new additions such that only 75% of the final interior wall framing is EPP, then no credit should be awarded. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1855" "2007-12-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "This gut rehab project plans to reuse the roof membrane. Is this eligible for 1/2 point?" "It is unclear what the term \'roof membrane\' refers to in this CIR. A project can earn 1/2 point for reuse of the finished roofing material (exterior). If the existing roof membrane makes up the 90% or more of the finished roofing surface, then it will earn 1/2 point. Otherwise, no credit is granted. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1884" "2007-08-28" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Does typical a cellulose insulation product comply with the State of California, DHS, ""Practice for Testing ....Chambers"" to earn 1/2 a point under Table 24?" "Cellulose products do not automatically comply with the California requirement. Individual product manufacturers can submit an application for compliance, but without doing the test and having it certified as compliant by CA Department of Public Health, it is not acceptable.\n\nA list of compliant insulation materials is provided by the Collaborative for High Performance Schools (another CA state organization) at the following link: http://www.chps.net/manual/lem_table.htm . You\'ll notice that there is a cellulose product from the International Cellulose Corporation on the list.\n\nAlso, cellulose insulation can be counted as \'recycled content\' and earn 1/2 point for being an EPP. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "1895" "2007-09-05" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the various framing components, can credit be awarded for recycled content steel?" "No, credit may not be awarded for the use of recycled content steel. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1896" "2007-09-05" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "How can wood windows earn points in MR 2.2 for being FSC-certified? Does the 90% content requirement only apply to the wood, or all of the window?" "For windows, only the frame and/or sash material must be FSC-certified. If the window has the FSC label, that is acceptable. In addition, 90% of all of the windows must be FSC-certified to earn credit. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1910" "2007-09-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is credit available for polypropylene or PEX domestic water supply piping? " "Yes, 1/2 point may be awarded in MR 2.2 if at least 90% of the domestic water supply piping is polypropylene or PEX. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1913" "2007-10-29" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "ID request for exemplary performance: homes that further minimize the use of VOC\'s in their paints: VOC-free interior, Low-VOC exterior. 90% of interior paints (by surface area) are Zero VOC. 90% of Exterior paints are Low VOC paint for the exterior." "Low-VOC exterior paint is suggested, but it is not awarded in LEED for Homes. If at least 90% of the interior paint is zero-VOC, this is worthy of a 1/2 ID point (in addition to the 1/2 point in MR 2.2 for low-VOC interior paint). Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "1995" "2008-02-27" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "MR2.2 - Table 24 and Table 25 for Paints and Coatings. On Table 24 is describes Interior Walls AND Ceilings AND Millwork. The description on Table 24 under Emission Specs says refer to Table 25, but when you get to Table 25, Millwork is not mentioned. I am assuming that the Nonflat: 150g/l is the one that would set the limit for Millwork, but just need clarification." "Table 25 describes the requirements for each type of paint, not the application. If the millwork is painted with nonflat architectural paint, then the VOC content should not exceed 150g/L. \n\nThe heading on Table 25 should be changed from ""Component"" to ""Paint Type"". Also, the first row should not only apply to interior walls and ceilings. The description should be changed to ""Architectural paints, coatings, and primers applied to interior elements"". Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1996" "2008-02-27" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "I\'m working on a project that has 3 types of sealers/sealants that don\'t explicitly appear in Table 26. They are: acoustical sealant; construction joint sealant; and stone sealer. I'm assuming that these are all \'architectural sealants\' and have a VOC limit of 25 g/L, but I wanted to confirm." "The South Coast Air Quality Management District Rule 1168 does provide specific definitions for each type of adhesive and sealant. See \nhttp://www.aqmd.gov/rules/reg/reg11/r1168.pdf for specifics. The definition provided for architectural sealant is as follows: \n\nARCHITECTURAL SEALANT OR SEALANT PRIMER is any sealant or sealant primer applied to stationary structures, including mobile homes, and their appurtenances. Appurtenances to an architectural structure include, but are not limited to: hand railings, cabinets, bathroom and kitchen fixtures, fences, rain gutters and downspouts, and windows. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "1998" "2008-02-27" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "The table in MR 2.2 includes ""Other: Trim"". We\'ve assumed this means interior trim. We have a supplier that can provide 100% of the exterior trim material that is recycled content. Is this worthy of a 1/2 point?" "The component listed in MR 2.2 refer to interior trim. The TASC would consider granting a 1/2 point for exterior trim, but more information is needed. How many lineal feet of trim is being used? What percentage of the trim would be recycled-content? Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2000" "2008-02-27" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "The table in MR 2.2 gives credit for finger joint studs in exterior wall framing. Should interior wall and trim also get credit for being finger jointed?" "A project that uses finger joint studs in interior walls should be awarded 1/2 point in MR 2.2. No credit is granted to finger joint trim, although it is encouraged. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2035" "2008-01-29" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "In Table 26, the entry for ceramic tile adhesive is missing. " "The requirement for ceramic tile adhesives is laid out in LEED-NC. It should be 65 g/L. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2135" "2008-05-01" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a product contains some post-consumer and some post-industrial recycled content, can the two be added together to comply with MR 2.2? For example: for a product that has 20% post-consumer AND 20% pre-consumer, can it be counted as 30% post-consumer (20% + 1/2 * 20%)?" "If a product contains both post-consumer and pre-consumer (post-industrial) recycled content, you can combine the totals. Post-industrial recycled-content is counted at half the value as post-consumer recycled content. The example provided is correct. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2159" "2008-05-17" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a project has cabinets that are 90% bamboo, could that be granted credit under MR 2.2?" "A project whose cabinets are 90% bamboo may earn 1/2 point under MR 2.2 if the cabinets also meet the second criterion, ""composite materials must contain no added urea-formaldehyde resins."" Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2160" "2008-05-17" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "This project and several others are using crushed reused concrete for their aggregate. Can a project earn 1/2 point for 25% post-consumer recycled content aggregate?" "Projects can earn 1/2 point for using aggregate with 25% post-consumer recycled content. Post-industrial recycled aggregate cannot be counted toward meeting this threshold. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2236" "2008-10-23" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "I\'ve got a builder trying to decide between FSC floor framing lumber and I-joists that are made with no UF glues. The builder found them listed in Green Spec 2006. It\'s a substantial amount of lumber, but it\'s not a material listed in the rating system as qualifying under low emissions. Can this type of product be awarded 1/2 point under low-emissions?" "No credit should be granted for the use of I-joists. While it is preferable to have I-joists with no added UF, this is not worthy of credit. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2237" "2008-10-23" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "The LEED -h standard on \'stains\' is 250 grams/L VOC, but the handbook and checklist don\'t deal with the concept of pre-finishing the millwork elsewhere. It seems to me the VOC in the finish is a different matter in a finishing shop where other regulations and systems may be in place to control outside releases and protect the workers. \n\nCan a project using pre-finished products (i.e. trim) qualify for this point?" "This credit only applies to finishes that are applied on-site. If a component is pre-finished, it is assumed to have zero emissions at the site. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2261" "2008-07-18" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "MR 2.2 has a component ""decking or patio material"". Can perimeter / yard fencing be counted here? This project is using Duro-Tech fencing made from 100% recycled HDPE. " "This project should be awarded 1/2 point for the use of EPP fencing around the perimeter of the home. \n\nA new assembly/component will be added for ""Other/Perimeter fencing"", and credit can be earned for recycled-content, reclaimed, or FSC content. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2262" "2008-07-18" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Intent: Preserve America\'s architectural heritage through restoration of historic structures to reflect their original character.\n\nProposed Measures: During renovation of a historic structure, retain and preserve the historic character of the property in accordance with the ten basic principles of The Secretary of the Interior\'s Standards for Rehabilitation (36 CFR Part 67).\n\nVerification & Submittals: Narrative describing design approach; historic photos of the building; before and after photos of building.\n\nProposed Benefits: As described by the National Historic Preservation Program, ""historic properties are now understood and appreciated as part of" "Following the guidance of the MR Technical Advisory Group, no credit is awarded in LEED for Homes for historic renovations, per se. All renovations are eligible for credit in MR 2.2 for salvaged or ""reclaimed"" material, as indicated in the Rating System. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2274" "2008-07-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can FSC certified lumber be verified by visually confirming the FSC logo on the lumber?" "No - a detailed invoice with intact chain-of-custody is required for FSC-certified wood; having the logo on the wood is not sufficient. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2321" "2008-09-17" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If the builder uses a composite product like a SIP panel, how do we determine if it is from a local source or not? Is it sufficient that the SIP panel be manufactured locally? Or do the sheets of plywood and the foam also need to be manufactured locally? Or does the wood have to be from local sources and the petroleum used to make the foam come from local sources too? Similar questions can be asked about ICF\'s and windows and a variety of other composite materials." "For the purposes of MR 2.2, SIPs and ICFs should be broken into two components: framing and insulation. If either or both components meet the requirements for EPP or local production, credit should be granted accordingly. The ""window"" component has been changed so it only refers to the window framing. \n\n Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2331" "2008-09-02" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Will the USGBC accept the industry standard test ""CAN/ULC S774"" as an alternate to the CA/DHS for the MR 2.2 credit? Both are non-proprietary, small chamber emissions tests developed through consensus processes and S774 is also considered in the industry as quite rigorous. " "Meeting the CAN/ULC S774 concentration thresholds cannot be considered equivalent to meeting the CA/DHS requirements, and a product that passes the CAN/ULC S774 test cannot be automatically granted credit for low-emission insulation in MR 2.2. \n\nHowever, the CAN/ULC S774 test protocols can be used to demonstrate that a product meets the CA/DHS concentration thresholds. However, testers must follow the procedure for retrofit applications (Procedure B), which requires intermittent testing of the materials. Also, indoor air concentrations resulting from the product must meet the permissible concentrations described in the CA/DHS test. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2369" "2008-10-15" "Homes" "MRc2: Environmentally Preferable Products " "This project is a custom home and the owners are now considering using rammed earth as their building system. Can this type of construction earn credits under MR1.3 (treated as comparable to SIP panels or advanced framing), or MR2.2 for EPP for framing materials?" "Rammed earth should not be awarded any credit under MR 1.3, as it is not necessarily more material-efficient than conventional framing. \n\nNo credit should be awarded automatically under MR 2.2, but the TASC would consider granting credit for rammed earth as an EPP if a significant amount of flyash or slag is incorporated. " "None" "None" "LEED Interpretation" "2448" "2009-02-11" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a project team does knowingly install non-FSC tropical lumber in the home, can exceptions be made in any case- for example, if the lumber was purchased prior to the project team contacting a Green Rater or Provider? Can a project like this compensate in some way - for example, by donating money to the Forest Stewardship Council?" "This prerequisite cannot be waived or compensated for. In cases like this, the tropical wood must be removed; it should be disposed of in a responsible way - such as selling or donating it for reuse. Lumber removed in cases like this cannot be treated as ""reclaimed"" and used on a different home pursuing LEED certification. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2449" "2008-12-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "This project is using wood that was salvaged from the Nahmint valley just outside Port Alberni. This wood was harvested after being blown over during a storm; it was not cut down. Special permission was obtained from the Department of the Environment. The department confirmed that the habitat was critical for the Elk and permission was granted to harvest the logs. The work was done in such a way as to minimize any impact on the forest. Without the harvest the trees would have been left to rot and the valley would have remained uninhabitable for the Elk. Subsequent studies have determined that the Elk have now returned to the valley.\n\n100% of the wood in the house will be from the salvage logs and from recycling the existing shed on site (I would estimate approximately 85% of the wood is from the logs and 15% from the shed). The salvaged logs will be used to build the exposed timber framing that makes up the main architectural feature of the building. The logs will also be used for the wood decking and flooring. (I\'m not sure of the board foot used in the building - I can calculate this if required)." "No credit should be awarded for this type of reclamation. If wood is harvested from a forest, credit can only be earned if the wood is FSC certified or local to the project. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2488" "2009-01-26" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Achieve exemplary performance with respect to the use of fly ash in foundation concrete and ICF walls.\nIncrease the use of fly ash in the concrete mix for both the foundation and the ICF walls beyond the minimum required for credit, to further reduce the use of Portland cement.\nUse 50% fly ash in all foundation footings and walls, resulting in a 60% further reduction of Portland cement compared with the minimum required to earn credit in MR2.2 for foundation (1/2 point) and concrete wall structure (1/2 point). The project team requests a bonus 1/2 point for each of the two components, or 1 point total for this IDR. \n\nInvoices and calculations showing the use of high-volume fly ash concrete used in the project. Declaration from the concrete supplier stating that the mix design included 50% fly ash replacement for Portland cement.\n\nTo reduce the project-related atmospheric CO2 emissions associated with Portland cement production - 60% greater reductions compared with the minimum required for the credit.\n" "The TASC rules that an additional 0.5 point credit (1 point total) shall be granted for each of these components if they incorporate 50% flyash or slag in place of Portland cement: Foundation and exterior wall - framing / wall structure. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2489" "2009-01-26" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Exemplary performance with respect to the use of FSC materials for roof, floor and wall sheathing.\nUse FSC plywood or OSB on all roof, floor and wall surfaces rather than just 2 out of 3.\nCompare square footage of surface area to material purchased\nTabulations documenting purchase and use of FSC. The use of FSC sheathing for all three surface area types resulted in the use of 76% more material than if only the floor and roof had been sheathed with FSC materials. \nProvide increased market demand for FSC material and reduce negative forestland & fisheries impacts.\n" "The TASC grants an additional 0.5 point (1 point total) for projects that use an EPP sheathing material in all 3 assemblies: roof, floor, and wall. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2526" "2009-02-26" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is it acceptable to use wood from territories or parts of countries that are located outside the tropics, even if the country of origin is located partly within the tropics? This project is purchasing wood from Tasmania, which is located entirely outside of the tropics (south of Capricorn). However, Tasmania is technically a territory of Australia and Australia is located within the tropics.\n" "Wood from Tasmania that is not FSC-certified can be used in LEED for Homes projects. Specific CIRs must be submitted for cases where the origin of lumber is a territory or geographically isolated region that is outside of the tropics, but politically connected to a country that is located in the tropics. Applicable Internationally; Australia; Tasmania Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2562" "2009-04-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Exterior Wall Framing and Interior Wall Framing components, can a project be awarded 1/2 point total if the EPP specification is met for 45% of each of the two components, even if the EPP specification is not met for 90% of either?" "Yes - if a project meets the EPP specification for 45% of the interior wall framing and 45% of the exterior wall framing, 1/2 point total may be awarded. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2604" "2009-04-30" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can a project earn EPP credit for using the following product for siding? \nNatural Hydraulic Lime Plaster was the exterior surface of choice for all buildings and site retaining walls for this project because it is an environmentally preferable product.\n" "This material can earn credit as an EPP under ""Exterior Wall - siding or masonry"" (i.e., be awarded 1/2 point). The TASC approved this approach, because of the embodied energy of lime plaster relative to conventional cement stucco. This ruling is generally applicable. The TASC recommends that NHL should be added to the EPP table in future versions of the Rating System. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2631" "2009-07-30" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "ID Request for the use of the Superior Wall pre-cast foundation wall system as a replacement for poured-in-place foundation walls. This system will reduce the amount of Portland cement in the wall system. " "One ID point may be awarded for the use of the Superior Wall pre-cast foundation wall system, or a similar pre-cast insulating foundation wall system, on the following conditions: \n \n • This system is used for all below-grade walls; \n • The project uses below-grade walls to support at least half of its conditioned space; \n • The project team must demonstrate with detailed calculations that the system reduces the amount of Portland cement used by at least 80% compared to a poured-in-place system. \n \n If these conditions are not met and verified, a detailed project-specific IDR may be submitted. \n \n Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2639" "2009-06-02" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For Roof / Roofing, can the EPP specification be met with recycled-content aluminum?" "Yes - the EPP credit may be awarded for 25% post-consumer or 50% post-industrial recycled content aluminum roof shingles. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2646" "2009-09-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Landscape / Decking or Patio component, can the EPP or Local Production credit be awarded if the project has both a deck and patio, but the requirements are only met for one or the other?" "No - if a project has both decking and patio materials, 90% of the combined material must meet the requirements under EPP or Local Production. If a project only has a deck or patio, credit may still be awarded. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2647" "2009-09-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Landscape / Decking or Patio component, is 30% flyash or slag an acceptable alternative under the EPP category?" "Yes - if decking or patio materials include 30% flyash or slag as a substitute for cement, this can be considered to meet the EPP specification. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2648" "2009-09-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is credit available if driveways meet the requirements under ""Landscape / Decking or Patio""? Should ""driveways"" be its own component worth 1/2 point, or should it be included as part of ""Decking or Patio""?" "Driveways are not included in the Landscaping / Decking or Patio component. On-site driveways can earn credit 1/2 point, to be counted under MR 2.2, if they include recycled content, reclaimed content, or 30% flyash or slag as a substitute for cement. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2672" "2009-10-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For FSC certification, do contractors and sub-contractors need to have Chain of Custody? If the lumber is passed to a custom craftsman (e.g. cabinet maker), does that craftsman need to have Chain of Custody?" "No, contractors and sub-contractors working on the project do not need to have Chain of Custody. If the craftsman is working as a contractor to the project, and is not a manufacturer receiving wood directly from a supplier, the craftsman does not need to have Chain of Custody. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2676" "2009-10-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "In Version 1.11, MR 2.2 included credit for recycled content gypsum board in walls and ceilings. In Version 2008, this is no longer included. Why?" "Projects can earn ½ point for recycled content gypsum, subject to the following stipulations: \n • If the gypsum is synthetic (i.e. from flue gas desulfurization), it must contain at least 95% recycled content (post-industrial, post-consumer, or some combination thereof); OR \n • If the gypsum is non-synthetic, it must contain at least 10% post-consumer recycled content. Post-industrial recycled content (i.e., synthetic gypsum from flue gas desulfurization) cannot be counted toward meeting this threshold. \n Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2677" "2009-10-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "According to the manufacturer for one of the products being used on this project, Green Label Plus is only available for carpets and adhesives, not for carpet pads and cushions. There is a Green Label test for carpet pads and cushions. If this is true, the MR 2.2 credit that requires ""carpet and pad"" to pass the Green Label Plus test should probably be changed to required Green Label Plus for the carpet and Green Label for the pad." "The requirement for MR 2.2- flooring - low emissions for carpet should be changed to: ""Carpet & pad: all carpet complies with Carpet & Rug Institute (CRI) Green Label Plus program; all carpet pad (or carpet cushion) comply with CRI Green Label program."" \n\nThis requirement for carpet pad to comply with CRI Green Label Plus program is an Errata; this program does not exist for carpet pad. \n Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2707" "2009-11-16" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Floor / Flooring component, can the EPP specification be met by installing wool carpet?" "Yes - wool carpet is an acceptable alternative to satisfy the EPP credit under the Floor / Flooring component. Consequently, 1/2 point should be awarded for using wool carpet in 45% of the total floor area and 1 point should be awarded for using wool carpet in 90% of the the total floor area. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2708" "2009-11-16" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a wall assembly has rigid sheathing and stud space blown insulation, can the rigid insulation be considered one component and the stud space insulation be considered a separate component? In this project, the blown-in insulation was first the only insulation, and it would have earned credit for being recycled-content. However, they later decided to add rigid insulation to improve the energy performance of the home. Can they still get credit?\n\nWhat if the project is using SIPS, ICFs, or another integral insulation product? We have 3 projects with ICF and Block exterior wall systems with Foam insulation used on the ceiling/lid. The batt insulation in the attic meets MR 2.2, but the integrated rigid insulation in the walls does not meet MR 2.2. Can the project earn MR 2.2?\n" "The requirements for insulation do not apply to rigid sheathing insulation, unless it is part of an integral insulation product (e.g., SIP, ICF). For example, \n Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2709" "2009-11-16" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can projects earn exemplary performance credit for the use of beetle-kill pine? Is this eligible for EPP credit in MR 2.2.? Colorado\'s pine forests are being decimated by the pine-bark beetle and are currently being harvested in massive quantities to prevent forest fires. Rather than waste the wood, a Colorado business is turning the wood into flooring. " "The use of beetle-kill pine is not eligible for an ID point or credit in MR 2.2. " "None" "None" "X" "LEED Interpretation" "2735" "2009-12-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can this prerequisite be satisfied by using an FSC Pure tropical wood product for only 70% of a component, and a non-FSC certified tropical wood product for the other 30%? Is this the same as using an FSC Mixed 70% tropical wood product for all of the component?" "No - if any tropical wood is used in the home that is not FSC certified, the prerequisite is not met. The difference between the two scenarios presented is this: \n • If a product is labeled as FSC Mixed 70%, the FSC rules require that the portion of the wood that does not meet the full FSC criteria (30% here) must still meet a minimum set of standards that LEED for Homes considers preferable. \n • In contrast, if a builder uses FSC Pure materials for 70% of a component and tropical non-FSC certified wood products for the remaining 30%, this latter material may not meet a minimum set of standards. In other words, the non-FSC certified wood may come from poor forestry practices. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2770" "2010-01-28" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For Floor / Flooring, can recycled-content carpet be used to satisfy the requirements? If so, does both the carpet and pad have to meet the recycled-content requirement?" "Yes - if part of the floor area of the home is carpeted, both the carpet and pad must be recycled-content (or meet the average recycled-content requirement, by weight or volume) in order to count toward the EPP requirement. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2776" "2010-03-10" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can a flooring product that has Greenguard IAQ Certification (rather than SCS FloorScore) qualify for Low Emission points?" "Yes, flooring that is certified under the GreenGuard program can earn low-emissions credit under MR 2.2, as an acceptable alternative to certification under the FloorScore program. This follows the precedent set by a CIR ruling passed on 10/19/09 in the LEED-NC program. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2817" "2010-07-02" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "The USGBC has released a memo on verifying FSC-certified materials. Can this memo be amended for use on LEED for Homes projects? (see attached)" """The original memo has been revised for LEED for Homes. See “LEED Memo for Homes with revisions” for marked up copy. See “LEED Memo for Homes with revisions accepted” for clean copy. Major differences include: \n • References to material cost are removed, since LEED for Homes calculations are not based on cost. • Instead of requiring projects to identify all wood on a line-item basis, only wood that is FSC certified must be identified on a line-item basis. This is in keeping with the streamlined paperwork approach of LEED for Homes. Identifying non-FSC wood on a line-item basis would be prohibitively expensive for projects."" Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2818" "2010-07-03" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is bamboo considered a ""tropical wood"" if it comes from a tropical country? Bamboo is encouraged in MR 2.2, so it\'s unclear how it should be handled." "Bamboo is considered ""grass""; as such, it is not subject to the prohibition in MR 2.1. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2819" "2010-07-04" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a product is certified as ""FSC Mixed Source"" or ""FSC Mixed NN%"", can it be used to meet the EPP specification in MR 2.2 - or is credit only awarded for ""FSC Pure"" certified material? " "Yes - (until further guidance from the TAG), any of the FSC certifications (FSC Pure, FSC Mixed Credit, FSC Mixed Source, and FSC Mixed NN%) may be used to satisfy the requirements in MR 2.2. Products that are certified as FSC Recycled may be used to satisfy the ""recycled-content"" criteria in MR 2.2 . Note that this is a change from the policy in the Reference Guide, which states that FSC Mixed NN% should be counted at NN%. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2820" "2010-07-05" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Floor / Flooring component, can products that are certified with the SMaRT Platinum label earn credit under the ""low-emissions"" category?\n" "Flooring products certified under the SMaRT Platinum label can be treated as equivalent to products certified under SCS FloorScore for the MR 2.2 low emissions credit. A project that uses flooring products certified as SMaRT Platinum or SCS FloorScore certified for at least 90% of flooring can earn 0.5 point under MR 2.2 low emissions. Additional question for TAG: Should SMaRT Platinum products be awarded EPP credit, instead of or in addition to low-emissions credit? Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2821" "2010-07-06" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "In areas where contractors or regulators do not allow 30% flyash as a substitute for cement, can credit be awarded for including 25% flyash as a substitute for cement?" "Yes, 1/2 point is awarded for 25% flyash or slag IF there is demonstrated proof that 30% is not allowed; 1 point for 50% flyash or slag. \n\nThe TASC has previously turned down most requests to lower the requirement to 25%. They have ruled to award 1/2 exemplary performance credit for the use of 50% flyash as a substitute for concrete. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2822" "2010-07-07" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Interior Walls and Ceilings and Millwork / Paints and Coatings component, can the low-emissions specification be met by meeting the relevant requirements in GS-11 2nd edition 2008? This is the update to GS-11 1st Edition 1993, which is cited in Table 25." "For the Interior Walls and Ceilings and Millwork / Paints and Coatings component, meeting the requirements in GS-11 2nd edition 2008 is an acceptable alternative to meeting the requirements in GS-11 1st Edition 1993. However, if a project satisfies the current requirements in the Rating System (i.e. those that reference GS-11 1st Edition 1993), credit should still be awarded. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2823" "2010-07-08" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "LEED for Homes awards credit for ""reclaimed"" lumber, which has generally been defined as post-consumer salvaged material. Can credit be awarded EPP credit for the use of ""reclaimed urban lumber"", which comes from felled urban forest that may otherwise go to landfill or a chipper. These typically include trees that would be removed for development, storm etc. " "Reclaimed urban lumber is material that would otherwise have gone to waste and is not the result of a preconsumer manufacturing process. By default its reclamation is \'post\' consumer reuse or recycling, given that there are no other stages left. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2826" "2010-07-13" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Should credit be awarded if a significant amount of PVC material is replaced with PEX material? Should credit be awarded if a significant amount of HDPE material is replaced with PEX material? Should credit be awarded if a significant amount of ABS material is replaced with PEX material?" "Yes - PEX is preferred to PVC. 2) Yes - HDPE is preferrred to PVC. 3) No - ABS is not preferred to PVC. In all cases, credit will only be awarded if the quantity of material is significant (comparable to components that are currently awarded credit in MR 2.2). Also, credit will only be awarded if it can be shown that PVC is the industry-standard material used for a given component. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2828" "2010-07-15" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a project has no trim, can 1/2 point be automatically be awarded in MR 2.2?" "Projects may not be automatically awarded 1/2 point for having no trim, but a CIR may be submitted. Please indicate whether the trim is replaced by any other material for aesthetic or functional purpose. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2829" "2010-07-16" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "The ruling in MR 02-103c awarded EPP credit for on-site driveways that include recycled content, reclaimed content, or 30% flyash or slag as a substitute for cement. Can a project earn credit for driveways that meet the requirements for local production?" "No credit may be awarded for driveways that meet the requirements for local production. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "2831" "2010-07-18" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Can a project earn credit for SCS FloorScore certified material, if greater than 90% of the hard-surface flooring is SCS Floorscore but less than 90% of the total flooring is SCS Floorscore." "A project may only be awarded credit for SCS Floorscore certified flooring if 90% or more of the total flooring area is SCS Floorscore certified. For example, if 25% of the flooring area is carpet, the project cannot earn credit for SCS Floorscore certified flooring even if all of the hard flooring meets the requirement. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "2833" "2010-07-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Do the adhesives in MRc2.2 include exterior application, or just interior? " "The low emissions products awarded in MRc2.2 includes only items inside the building envelope. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "3702" "2007-01-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Exterior Wall / Framing component, can the EPP specification be met by using engineered I-joists?" "No - engineered I-joists may not be awarded credit. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "3703" "2007-01-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Roof and Floor and wall / Insulation component, can the EPP specification be met using bio-based materials?" "No credit is awarded for the general category of ""bio-based materials"". CIRs may be submitted for individual bio-based materials/products. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "3704" "2007-01-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "ID request: Use black locust wood instead of chemically or pressure treated wood when constructing outdoor decks or patios. Black locust wood is an extremely hard and durable wood that is resistant to damage by heat and weather. It is native to North America." "The request is denied. While the use of hard and durable wood is preferable to pressure-treating, it is not worthy of an ID point. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "5267" "2007-06-06" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "If a product includes recycled content, can that part of the product be automatically granted credit for the ""Local Production"" specification?" "Recycled content products should not be automatically awarded Local Production credit. However, the Local Production requirement can be met by 100% recycled content products if they come from a recycling facility within 500 miles. Updated 10/1/13 for rating system applicability. " "None" "None" "X" "LEED Interpretation" "5333" "2009-02-10" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Floor / Flooring component, should garage floors be included in the calculations? What if the garage is conditioned?" "No - garage floors should not be included in the calculation for flooring, regardless of whether the garage is conditioned or not. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "5371" "2009-09-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Are the stair\'s wood treads considered to be part of the flooring?" "The Green Rater may use his/her discretion, but in general the tread surface (finish) material should be considered flooring. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "5373" "2009-09-21" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Are the stair\'s wood railings part of the interior trim?\n" "The Green Rater may use his/her discretion, but in general stair railings should be considered trim. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "5389" "2009-09-25" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "Is this prerequisite satisfied automatically for products that are FSC certified? Does this apply to all FSC labels, including FSC Pure, FSC Mixed Sources, FSC Mixed Credit, FSC Recycled?" "Yes - if a finished product is certified under any of the FSC labels, the requirement in part (b) is satisfied. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "5398" "2009-10-19" "Homes, Mid-rise" "MRc2: Environmentally Preferable Products " "For the Floor / Flooring component, how should credit be awarded for Low Emissions if a project has some carpet and some hard-surface flooring?" "A project can earn 1/2 point for low emissions flooring for any of the following: \n • at least 90% of the flooring is CRI Green Label Plus carpet with CRI Green Label pad, OR \n • at least 90% of the flooring is hard surface flooring, OR \n • at least 90% of the flooring is a combination of CRI Green Label Plus carpet (with Green Label pad) and hard surface flooring \n A project can earn an additional 0.5 pt (1 pt total) for low emissions flooring if 90% of the total flooring is SCS FloorScore certified. Updated 10/1/13 for rating system applicability. " "None" "None" "LEED Interpretation" "10356" "2014-01-01" "Homes, Mid-rise" "MRc2 - Environmentally preferable products" "For projects using structural concrete floors, walls and/or roofs, what requirements must be met in order to earn points under MR credit Environmentally Preferable Products?" "The project team is inquiring what requirements have to be met for LEED BD+C: Homes 2008 MR credit 2: Environmentally Preferable Products for projects that have a combination of concrete and framing. For sections of the building that contain both concrete and wood, projects must meet credit requirements for both concrete and wood for at least 90% of the total component, even if the framing is not structural. This includes the components in Table 1. Environmentally Preferable Products; ‘exterior wall – framing/wall structure’, ‘floor - framing’, ‘interior wall - framing’, and ‘roof - framing’. If a building is primarily structural wood framed construction, but built over a single story of concrete podium construction (such as over a parking garage or commercial spaces), only the wood framing must meet credit requirements. For the component ‘foundation: aggregate’ and ‘foundation: cement’ components, credit requirements must only be met for slab and any below grade foundation walls/structural components. If a project would like to earn credit for using at least 30% fly ash or slag as a cement substitute, they may average this across multiple components. For example, if they use 40% fly ash for the foundation and 25% for the roof, they may get credit for installing fly ash for both ‘foundation-cement’ and ‘roof-framing’. " "None" "None" "X"