Installing Rigid Foam Insulation On Basement Floor

There are several ways to install subflooring above the rigid foam.

Installing rigid foam insulation on basement floor.

Rigid foam is the best insulation for rim joists. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. Ideally you want to have rigid foam insulation in a basement against all the outside walls and the floor a minimum of five centimetres on the walls and 2 5 cm on the floor. I posted on the basement insulation site but i ve developed my thinking a little more and now ponder whether this would work for the concrete basement floor that i very much want to finish in ceramic tile 6 poly 1 xps foam 3 4 advantech 1 2 hardibacker thinset and 1 4 tile.

Save time and space in your basement with owens corning foamular insulpink extruded polystyrene xps insulation. Installing rigid foam on basement floor on september 6 2020 by amik 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. It won t hold moisture even if you had a flood in your basement. Step 5 cover with plywood.

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. Rigid foam insulation basement floor. No comments rigid foam insulation is a good choice against the concrete many experts recommend leaving st basement insulating walls pin by nathan bremer on wall building foundation interior guide to correct how insulate your chicago tribune floor it up suloor what do behind diy room home improvement forum. 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.

By admin filed under basement. Not only does it provide high r values but foam board insulation is also easy to install lightweight and can be used in any room of your home. In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. You may need to cut the insulation down with a utility knife to make sure it fits properly between each grid.

You can insulate second floor rim joists following the same steps shown here if you happen to tear out a ceiling during remodeling. All rigid foam insulation is mould and mildew resistant. Place your rigid foam insulation between the sleepers in the open areas. Once the insulation has been placed you will want to cover it up with plywood.