Installing Rigid Foam On Basement Floor

Basement flooring how to insulate a concrete floor.

Installing rigid foam on basement floor.

On september 6 2020 by amik. When installing the foam use caulk or tape for maximum insulation between the material and the board or floor. We are in the process of building in maine. They put the black tar stuff painted on the outside.

It seems like installing the xps on the walls first and across top of wall taping foam all seams then installing xps on the floor taping all seams and tape foam at the wall junction followed by t g subfloor 4 6 tapcom per sheet with 1 4 1 2 gap around wall perimeter for expansion would do the best at sealing the entire basement wall. Seal the joints with a sealing tape tyvek etc and then seal the bottom joint at the floor level and the top joint at the subfloor above with an expanding spray insulation foam use the one you would use for a window installation. We plan to insulate the inside walls of the basement with at least the r10 foam board. There are several ways to install subflooring above the rigid foam.

2x4 sleepers installed on center every 12 16 inches and fastened down with rigid foam insulation 1 1 2 inch thick placed between the sleepers. Rigid foam is combustible so by code must be sealed in by a thermal barrier of either drywall or 5 5 of roxul with the latter providing added insulation in a critical heat loss zone provide sound dampening to the above floor. Make sure the foam boards run from the floor to the underside of your floor deck above. Different brands of subfloor tiles are available that include a drainage space for any moisture on the concrete rigid foam insulation and a composite surface that serves as the substrate for finished flooring.

Insulation vapor barrier under basement floor. The walls of the foundation were poured last week and they will backfill on monday 9 17 18. Eps xps foam insulation styrofoam sealing and insulating rim joists fibergl vs rigid foam insulation basement insulation how to insulate spray foam vs rigid insulation. Basements require special subflooring that will not get moldy or deteriorate when exposed to moisture.

All foam boards absorb water vapor. Concrete basement floor. You can use either one or two layers of plywood or osb and the subflooring can either be fastened to the concrete with long tapcon screws or it can simply float above the foam. Installing rigid foam on basement floor.

It will degrade its r value. 7 basement flooring options. Cover the insulation with a vapor barrier before you install it.