Plywood faced walls in insulated basement?
I"m insulating my basemen with 1" of XPS glued to poured concrete walls and 2x4 wood framed walls within with R-15 Roxul in the stud bays. I've been facing the walls with mold resistant drywall and latex paint. The basement seems relatively dry with no liquid water leaks. However, based on humidity levels I'm assuming some water is making its way in through the concrete walls and floors.
In one basement area which will be used as a mechanical room I'd prefer not to use drywall and was considering plywood instead. I understand that plywood is less vapor permeable than drywall but that it is still considered "semi-permeable".
1) Is plywood (probably 1/2" sanded SYP with interior glue) too impermeable for proper drying of the wall assembly?
2) Even if it is permeable enough am I asking for trouble by installing what could be a growth substrate for mold?
Posted Fri, 04/04/2014 - 16:35
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