Insulating Basement With Drain Board
I’m finishing a basement and trying to figure out how to insulate the walls. A couple questions:
1) I have a French drain with a drain board extending one foot up from the floor down to the footer. Would it be appropriate to simply glue 2″ of XPS/EPS (I’m in climate zone 4) to the wall directly over the drain board? Or would there be any reason to stop the insulation at the top of the drain board and seal at that point. One minor difficulty is the drain board “bulges” out a bit in places, which may make it tricky to glue to the board and the wall above it.
2) I have a “step” in my wall (maybe they used different sized blocks when this home was built?). My plan is to cut foam board to match/follow the step, then tape the seams. After that I would frame the wall straight up (without a step) leaving a gap between foam and framing on the upper half of the wall. Does this seem like a reasonable plan?
Attaching a picture of bottom part of the wall, drain board and step. Thanks for the help!
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