Installing Rigid Foam On Basement Floor

Make sure the foam boards run from the floor to the underside of your floor deck above.

Installing rigid foam on basement floor.

Basements require special subflooring that will not get moldy or deteriorate when exposed to moisture. If you are redoing your basement and need to add rigid foam insulation there are a few steps that should be taken before you begin however after checking on a few minor things you will be able to add the insulation with just a few of the right tools. 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. They put the black tar stuff painted on the outside.

Concrete basement floor. When installing the foam use caulk or tape for maximum insulation between the material and the board or floor. 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. Installing rigid foam on basement floor.

Cover the insulation with a vapor barrier before you install it. It will degrade its r value. On september 6 2020 by amik. We plan to insulate the inside walls of the basement with at least the r10 foam board.

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. 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. We are in the process of building in maine. Basement flooring how to insulate a concrete floor.

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. 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. There are several ways to install subflooring above the rigid foam. The walls of the foundation were poured last week and they will backfill on monday 9 17 18.

Keep foam board insulation away from direct sunlight prior to installation. 7 basement flooring options. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab.