What Insulation Under Concrete Floor

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.

What insulation under concrete floor.

This allows an area for insulation and fill material under the slab. Foamular foamular 250 3 in. Insulating concrete garage floors begins with covering the entire floor with 6 mil polyethylene which will serve as a vapor barrier. R 15 scored squared edge rigid foam board insulation sheathing model 9gb view the owens corning basement and crawlspace insulation.

Overlap the seams about 6 to 8 inches and seal the seams with waterproof construction tape. Check out this article for a list of slab edge insulation solutions and episode 125 for my interview with henry edney of maxraft. The insulation is then laid followed by a polythene separating layer and either a concrete screed or tongue and groove chipboard ready to receive the specified floor finish. Step 1 excavate the area under the slab to 12 inches below the planned level of the top of the slab.

The first thing to consider when looking into different types of concrete floors is why it s so important to insulate the floor slab. Lightweight rigid polyisocyanurate pir foam insulation boards such as those manufactured by celotex are among the most thermally efficient commonly available. Most modern homes have a solid floor for example. The foil within the product acts to spread out the heat signature of the heating coils.

Insulation is laid on the concrete and covered with a screed. Adding insulation under the concrete floor requires the same skill set and equipment as forming and pouring the concrete slab. Insulating a solid floor.