Hello. i have a basement in zone 5B. we are getting ready to finish it and I have a couple questions.
Can i use 1/2″ xps against the interior foundation, then frame up to that and use mineral wool batts in the stud wall to get to the reqd R value?
—the rim joists would also have xps and sealed with great stuff.
—wall seams will be taped and the bottom sealed with great stuff.
Should radon mitigation be done before or after insulating the foundation?
we have a crawlspace on one side of the basement. the foundation wall that separates the crawlspace from the basement is appx 42″ high. does this need foam board?
–the builder did not have blanket insulation on this portion of the foundation
–it looks like where the stairwell meets this part of the foundation the build glued the drywall right to that foundation knee wall.
if i am planning on having a bathroom with shower on the wall between the basement and crawlspace will there be moisture issues in the crawlspace?
thanks. great site.