Should we tear out our pink fiberglass (above grade) and EPS (below grade)?
Our entire basement (800 sq ft?) has pink batt insulation above grade covered with vapour barrier and then drywall. It doesn’t seem terribly damp down there, but I’m just wondering if we really should tear it all out and replace it with spray foam, rigid foam, or Roxul.
Secondly, about 30% of our basement has Expanded Polystyrene Foam (EPS), I think about 1/2″(ish), below grade, covered with drywall. Should we rip all that out as well and redo it with spray foam or rigid foam? Or just leave it?
I am wondering from both a heat cost savings, as well as a moisture benefit. We leave in the East Coast of Canada (Nova Scotia). If the benefit is minimal, then we don’t want to bother. For the rest of the basement that has currently no insulation below grade, we are going to get spray foam.
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