How To Install Rigid Foam Insulation On Basement Floor

There are several ways to install subflooring above the rigid foam. Make sure the foam boards run from the floor to the underside of your floor deck above. Is rigid foam insulation the right insulation for your basement.

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Save time and space in your basement with owens corning foamular insulpink extruded polystyrene xps insulation.

How to install rigid foam insulation on basement floor.

Once the insulation has been placed you will want to cover it up with plywood. Or as demonstrated here you can cover the slab with rigid foam insulation add two layers of plywood and then add the finish flooring. There are two ways to handle insulating concrete floors. Step 4 install the insulation.

It installs easily with furring strips an. You may need to cut the insulation down with a utility knife to make sure it fits properly between each grid. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. Place your rigid foam insulation between the sleepers in the open areas.

Step 5 cover with plywood. This is very common mainly because it is very cost effective. Most homes use fiberglass but rigid foam insulation although more costly offers a few extra features. Your choice really comes down to blanket insulation aka fiberglass or xps.

Let s take a look. 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. First place a layer of 1 1 2 closed cell foam insulation board against the basement walls using a manufacturer s recommended adhesive. You can attach wood sleepers to the floor fill the gaps with rigid foam insulation and then apply your finish flooring.

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