Insulation Over Concrete Slab

Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system.

Insulation over concrete slab.

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. Over concrete slab for buildings with existing foundations it may not be possible to insulate below the concrete slab. Frost wall and prep. Follow label directions and allow it to dry thoroughly.

3 clean the surface of the slab thoroughly then apply a coating of asphalt primer to help the asphalt cement bond. With the slab on grade for this home we started with a typical frost wall foundation. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab. Eps 3 xps 2 faced or unfaced.

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. Amvic multipurpose high density insulation kit r10 2 3 8 in. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems. 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.

One option for insulating on top of a slab is to apply rigid foam insulation directly to the slab. Insulating over a structural slab thinking outside the slab. Concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. How to insulate a garage floor above a concrete slab insulation on slab.

One solution would have been installing rigid insulation under the slab turning it up on the. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department. Learn how to install beautiful hardwood floors over a concrete slab. The foil within the product acts to spread out the heat signature of the heating coils.

4 where rainfall can be heavy use a fine tooth trowel to apply cold cut back asphalt mastic over the entire slab use about one gallon per 100 square feet of floor. Another option is to insulate the slab after the framing is complete so the slab is protected from the weather.