ID#10250 made on
EQc4.4 - Low-emitting materials - composite wood and agrifiber products
LEED BD+C: New Construction, LEED ID+C: Commercial Interiors, LEED BD+C: Core and Shell, LEED BD+C: Retail, LEED ID+C: Retail, LEED BD+C: Healthcare
To comply with CARB, some composite wood manufacturers are switching from urea formaldehyde resins to:a. Melamine urea formaldehyde with urea formaldehyde added as a "scavenger" to bond with...
To comply with CARB, some composite wood manufacturers are switching from urea formaldehyde resins to:a. Melamine urea formaldehyde with urea formaldehyde added as a "scavenger" to bond with residual un-bonded formaldehyde molecules attempting to reduce formaldehyde off-gassing. b. Melamine formaldehyde with urea added as a scavenger. These resins are being marketed as "melamine formaldehyde" and compliant with LEED's no added urea formaldehyde IEQ4.4 credit requirements. While resulting composite wood products made with these resin technologies may be CARB compliant, the question arises as to the use of these resins being compliant with LEED IEQc4.4. Phenol formaldehyde and MDI have long been proven to be the best resin options to urea formaldehyde to prevent formaldehyde off-gassing, so utilizing resins with urea that formulate urea-formaldehyde either prior to going in the end product, or within the end product, seems counter to the intent of this LEED credit. Are melamine urea formaldehyde with added urea formaldehyde acting as a scavenger, and melamine formaldehyde with urea added as a scavenger to bond with loose formaldehyde within a product, acceptable resin technologies considered compliant with LEED EQc4.4?
Revised ***4/1/2013*** Products using melamine urea formaldehyde (MUF) with added urea formaldehyde acting as a scavenger or melamine formaldehyde with urea added as a scavenger to bond with loose formaldehyde within a product do not automatically meet the credit requirements for IEQ credit 4.4. If the composite wood product using MUF can meet the testing requirements and is found compliant with the California Air Resource Board (CARB) Airborne Toxic Control Measure (ATCM) 93120 requirements for no-added formaldehyde based resins or the requirements for ultra-low-emitting formaldehyde resins (ULEF), the product can contribute to IEQ credit 4.4. Previously, it was unclear how melamine fit within the scope of this credit. This ruling is intended to clarify how to address melamine, not prematurely adopt the LEED v4 credit language for composite wood. Therefore, composite wood products using other amino resins must meet the no added urea-formaldehyde requirements of LEED 2009. Applicable internationally.
Related Addenda (Corrections & Interpretations)