I need some help understanding the moisture projection requirements of this credit. Our GC is believes that starting GWB before the building is fully enclosed (missing curtain wall) would be acceptable and assert that it is necessary to maintain our construction schedule. They promise that any GWB wetted by rain or otherwise would be replaced as needed.
Obviously we don't like this, but would it comply? They claim long project delays will occur if they aren't allowed to proceed with this method as they've counted on installing this way. Any suggestions? It seems unclear what the recourse would be if a material/product was subjected to moisture.
Allison Beer McKenzie
Architect, Director of SustainabilitySHP Leading Design
LEEDuser Expert
646 thumbs up
March 12, 2011 - 11:42 am
Brad- this obviously isn't ideal, but it won't necessarily prevent credit achievement because the credit doesn't specify exactly have absorptive materials need to be protected. Any GWB that gets wet will definitely have to be replaced. I would also insist on some sort of regular monitoring of the installed GWB to make sure any board that has gotten wet will be identified. I would also see if the can install some protective sheeting over either the installed GWB or the open curtainwall areas to minimize likelihood of exposure.