Floor Insulation Over Concrete Slab

1 to prepare for insulating the floor first evaluate the condition of the concrete.

Floor insulation over concrete slab.

One solution would have been installing rigid insulation under the slab turning it up on the. Cement 3 concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. Insulating over a structural slab thinking outside the slab. If you know you have issues with moisture tend to those problems before installing the insulation.

With the slab on grade for this home we started with a typical frost wall foundation. The reflectix concrete slab insulation is an innovative easy to handle product that increases the energy efficiency of radiant floor and snow melt systems under concrete. Insulation for concrete slab floors if the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a. Another option is to insulate the slab after the framing is complete so the slab is protected from the weather.

The foil within the product acts to spread out the heat signature of the heating coils. Where insulation is positioned above the slab the slab and dpm can be installed either way round. 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. Although building codes differ by region builders typically use r5 and r10 insulation under the concrete slab but floors insulated with r20 contain the heat in your basement far better than those insulated with lower r values.

Also check the floor for smoothness and level. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department. Frost wall and prep. One option for insulating on top of a slab is to apply rigid foam insulation directly to the slab.

If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. How to insulate a garage floor above a concrete slab insulation on slab. You ll most likely end up with 1 inch of foam board 3 4 of an inch sleepers and 3 4 of an inch for the sub floor for a total of 2 1 2 inches. Eps 3 xps 2 faced or unfaced.

There are several ways to install subflooring above the rigid foam. Final thoughts on insulating a concrete floor the only issue to watch out for in this situation is the height.