Installing Rigid Foam Insulation On Basement Floor

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Installing rigid foam insulation on basement floor.

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. 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.

It installs easily with furring strips an. Step 5 cover with plywood. Save time and space in your basement with owens corning foamular insulpink extruded polystyrene xps insulation. 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.

You can insulate second floor rim joists following the same steps shown here if you happen to tear out a ceiling during remodeling. There are several ways to install subflooring above the rigid foam. It won t hold moisture even if you had a flood in your basement. Step 4 install the insulation.

The inspector may require you to cover the new insulation with drywall as a fire block or leave some areas uncovered to allow for termite inspections. Place your rigid foam insulation between the sleepers in the open areas. 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. 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.

Once the insulation has been placed you will want to cover it up with plywood. Rigid foam insulation basement floor. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. You may need to cut the insulation down with a utility knife to make sure it fits properly between each grid.