EPS on basement floor?
Been slowing remodeling our 1930’s basement, in part with help from this site. Thank you.
I have a couple questions about materials. Currently I have 2″ xps foam from floor to ceiling, spray foamed top and bottom and taped. Followed by framing wood framing and Roxul batts (r25 total). The walls are concrete, 9-10″ inches thick. 7-something ceilings (varies) with about 50/50 below grade above grade (brick veneer cape cod style, perched up a bit). The insulation has made an incredible difference so far.
Looking at the floors now. I think we’ll end up doing tile in about 250sq ft of the space. Another 250 will be bare concrete (utility and storage). The remainder is already tile (storage, bathroom, laundry). I have an aprox 11×14 space that will be a spare room and I would like to do carpet, carpet tiles in there. My plan is to put down eps or xps, t&g subfloor (Advantech prob). Head space is a problem, so I was thinking .50 or .75 of rigid foam. I know that’s not much, but I am hoping the thermal break will help. Been getting temps from the concrete floor for about 6 months. Low single digits overnight here and the lowest temp was against the wall at 59 and the average throughout the basement was 62/63. Would thinner foam work in this case? I know the fear is hot air condensing on the concrete.
The only eps I can find is R-Tech, around here. It has a foil on one side and a film (removable) on the other. Would that work? What about removing the white film and putting the foil side up, taping the seems?
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