How do you see the use of hot air/flame applied bituminous sheets as a vapor barrier on roofs regarding VOC? Which category should I use? Or should I even count it to meet the compliance with this credit?
It is not a part of primary waterproofing system, but maybe it can be considered a secondary waterproofing system. Does the addenda to the ref. guide exclude this as well as singly-ply roof membranes?
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Yetsuh Frank
DirectorYR&G
23 thumbs up
July 17, 2012 - 4:12 pm
Petr, I think this material is excluded because it is not part of the interior. See the note above regarding whether a material "touched by air." From your description it sounds like this is more properly understood to be part of the exterior envelope, not the interior- which is the focus of this credit.