Does basement insulation require waterproofing the concrete walls before rigid insulation?
I plan to insulate my basement walls using 2″ XPS, air seal the seams, build a 2×4 wall 16″ o.c., insulate with batts, and complete with drywall.
I have also been advised to waterproof the concrete walls using either Drylock or Super seal. Is that needed?
The exterior basement wall has a mirror drain and water proofing and the burrito-wrapped footing drain is tightlined to an external sump. My basement is currently dry.
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