Hi. We want to use a grout for surface leveling under the baseplate of steel anchors on roof. It will be covered with secondary waterstoping membrane, thermal insulation and single-ply roof membrane. So it is inside of weatherproofing system. 1) Does this grouting fall under this credit? 2) In which category shoul I put it? 3) Is a weatherproofing system defined only by a roof membrane, or is it the whole roof slab consisted of secondary waterproof membrane/air barrier, thermal insulation and roof membrane? (then adhesives and sealants inside the roof composition are exempt, right?)

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Matthew Martin

Assistant Site Superintendent

QBS, Inc.

LEEDuser Basic Member

3 thumbs up

Tue, 01/24/2017 - 21:22

Similar to Mr. Moore's question above: we have a contractor applying a fluid-applied air barrier coating on the exterior concrete masonry unit (CMU) wall. (Product is Enershield-I) it has low VOCs of 21g/L and is also a water-resistive layer Not applied to the interior but it does form the air barrier on exterior wall b/t Brick veneer and CMU wall. (It IS the air barrier system) Is this considered inside the air barrier system? If so, should it be included in c.4.1 adhesives and sealants or 4.2 paints and coatings?

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