Our masonry contractor submitted VOC documentation on Wire-Bond Aqua Flash Mastic with a VOC content of 270 g/L. I am first not sure if this needs to be submitted for IEQc4.1 or not.

The two mirror mastics that I found both contain carcinogenic ingredients, however they both meet the VOC limit of 250 g/L.

What is the story with concrete additives?

I know this question has been asked before but I'm unable to locate the official USGBC interpretation for acceptable resources for VOC calculations for non-domestic projects.

We are applying wood cladding for the walls. To assign the cladding panels, firstly we apply wood framing to the walls then fasten the panels to them.

Hello, This may seem like a stupid question, but I am working on a project that has porcelain wall tile being installed in bathrooms and I'm not sure how this is supposed to be listed under IEQc4.

Minimum duct seal level must comply with table 6.4.4.2A- Ashrae 90, i have this in my specification for duct and i think it apply only to G.I Duct, Not to pre insulated duct, please anyone can clar

Hi, I want to make sure that the only products that are covered by the VOC-requirements in LEED are the ones installed inside the building when it’s weatherproofed. For example a part of the build

off-gassing of asphalt impregnated felt underlayment for under wood floor. Does anyone have any documented info indicating problems with off-gassing of asphalt impregnated felt underlayment for un