Floor Insulation Over Concrete Slab

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.

Floor insulation over concrete slab.

Eps 3 xps 2 faced or unfaced. 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. Another option is to insulate the slab after the framing is complete so the slab is protected from the weather. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab.

This will most likely require doors to be lifted and stairs to be reconfigured. One option for insulating on top of a slab is to apply rigid foam insulation directly to the slab. The foil within the product acts to spread out the heat signature of the heating coils. You may need to grind down significantly high spots to ensure an even surface.

Cement 3 concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. If you know you have issues with moisture tend to those problems before installing the insulation. Where insulation is positioned above the slab the slab and dpm can be installed either way round. Insulating over a structural slab thinking outside the slab.

How to insulate a garage floor above a concrete slab insulation on slab. Also check the floor for smoothness and level. 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. Floor 1 garage 3 under slab 5 more ways to filter.

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. With the slab on grade for this home we started with a typical frost wall foundation. Final thoughts on insulating a concrete floor the only issue to watch out for in this situation is the height. There are several ways to install subflooring above the rigid foam.

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