I am looking for some clarification pertaining to the VOC and emissions requirements for Casework and Millwork.
We are in the process of reviewing a bathroom counter assembly. The counter is Silestone, but it has supports made out of Plywood laminated with a high-pressure decorative laminate (HPL). Please note that the lamination occurs off-site.
I initially categorized the HPL as composite wood, and asked for ULEF/NAUF documentation. The manufacturer has responded stating that HPL is not a composite wood product, and as such the ULEF/NAUF requirements do not apply.
Table 5 states the following:
Products with composite woods constituting all or portion of product (e.g., countertops, cabinetry with composite wood cores and internal components) must be constructed with composite wood documented to have low formaldehyde emissions (compliant to CARB ATCM limits for no added formaldehyde or ultra-low formaldehyde emitting or its equivalent). Materials with no defined category under ATCM must follow requirements for particleboard. Built-in cabinetry constructed of inherently nonemitting materials (e.g., metal with factory-applied powder coating or plating) are eligible for credit without testing.
The bolded sentence seems to apply, thus requiring the ULEF/NAUF documentation. In my interpretation, this would also apply for the Silestone counter, which is not a wood product, but is part of an assembly with composite wood. Do you agree?
Do you think the ULEF/NAUF documentation is required for these elements (HPL & Silestone)?
ragesh ramadas
Sr.Architect,LEED CoordinatorShapoorji Pallonji Mideast LLC
2 thumbs up
July 28, 2019 - 8:47 am
https://leeduser.buildinggreen.com/forum/nauf-low-emitting-calculator-comp-wood
hope the above link helps.
America Alva
PageSeptember 15, 2019 - 2:18 am
I have the same question about an HPL on my project. I got the same answer from the manufacturer that product is exempt. Did you get any additional information on this topic?
Linda Davisson
Senior Sustainability StrategistJacobs Engineering
225 thumbs up
November 13, 2019 - 2:00 pm
Both of these products (HPL and solid surfacing material) are considered plastic and not composite wood and therefore not required to meet the NAUF requirements. The plywood, particleboard or MDF in the assembly are required to be NAUF.
DuWayne Baird
PrincipalEA Energy Solutions, LLC
15 thumbs up
November 13, 2019 - 2:09 pm
This was my thought, thank you for confirming! So then does the HPL and solid surface get classified as furniture in the Low Emitting Calculator? It seems to be specifically excluded from walls, it's not composite wood, furniture seems to win by default.
Michelle Rosenberger
PartnerArchEcology
522 thumbs up
November 13, 2019 - 2:22 pm
Hi all,
Please note there is no NAUF (no added urea formaldehyde) requirement in v4. The unfortunately close acronym NAF means no added formaldehyde and is not demonstrated with a manufacturer's statement or even a third party certification like SCS Global. You need to have an exempt mill certification for NAF or ULEF to meet this requirement.
Linda Davisson
Senior Sustainability StrategistJacobs Engineering
225 thumbs up
November 13, 2019 - 5:11 pm
DuWayne, as of now, countertop materials do not fit neatly into a category, and it should not be included in furniture because that is for movable furniture. Until further specific guidance / addenda, I would exclude countertops from the LEM Calculator, or alternatively include in Walls category since millwork is considered part of a wall assembly.
Thanks Michelle - yes, NAF, not NAUF - although interestingly the LEED 4.0 LEM Calculator pull-down has a selection for NAUF and ULEF (not NAF).
Michelle Rosenberger
PartnerArchEcology
522 thumbs up
November 13, 2019 - 5:21 pm
Hi Linda,
Yes, the calculator is in error. It's tough to shake the acronym. I made the point primarily because the mill exemption documentation requirement is very specific - the executive order or CARB exemption letter or proof the product is on the TPC list. And we've had some third party certified NAF products rejected by LEED reviewers.