Is some paper-faced drywall okay in the basement?
I have stem walls with wood framing in some sections of 2×6 framing in my basement. I will finish the basement by using open-cell foam to fill the 2×6 voids. For the poured walls, I will adhere 2 inches of XPS to the walls, add 1 5/8 metal studs, and cover the whole thing with drywall.
The basement also hosts my HVAC system. The design calls for returning all the air in the house by drawing it into the basement. (We are installing a couple of louvered doors to make that work. With a 3,000 square-foot house and 2 tons of heat pump, the system should run enough to keep moisture below 50 percent. (I’m also installing two small ERVs for fresh air.)
I’ve included all this detail because I want to give a complete picture of anticipated conditions in the house and basement.
My drywall plan for the basement calls for using GlasRoc (mold rating of 10) on the portions of the wall that cover rigid foam and concrete and AirRenew drywall on the sections with spray foam and wood framing. I could use GlasRoc everywhere, but I want to take advantage of AirRenew’s formaldehyde capture feature.
Does anyone see a problem with this approach? I’m meeting with the drywall contractor tomorrow and would like to have my ducks in a row.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part