Best subfloor for moisture and insulation under a basement rubber floor?
I would like to put a Roppe rubber floor down in my basement; it’s soft and warm on the feet. I have an 80 yr. old concrete slab over which I’d like to add some moisture mitigation and insulation. The installation folks at Roppe suggest a 2 part epoxy paint on the concrete such as Mapei Planiseal, a portland cement for leveling, followed by the Roppe moisture resistant adhesive, and then the 1/8″ rubber floor itself.
Reading the GBA site, I’d like to get 1″ of XPS in there somewhere. The question is – where do I put it among all these layers?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part