Floor Insulation Over Concrete Slab

You may need to grind down significantly high spots to ensure an even surface.

Floor insulation over concrete slab.

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. Where insulation is positioned above the slab the slab and dpm can be installed either way round. 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.

There are several ways to install subflooring above the rigid foam. If you know you have issues with moisture tend to those problems before installing the insulation. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. With the slab on grade for this home we started with a typical frost wall foundation.

Insulating over a structural slab thinking outside the slab. How to insulate a garage floor above a concrete slab insulation on slab. Frost wall and prep. 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.

One solution would have been installing rigid insulation under the slab turning it up on the. One option for insulating on top of a slab is to apply rigid foam insulation directly to the slab. Also check the floor for smoothness and level.