In many new homes, insulation under the slab consists of foam insulation board, plastic sheeting, or nothing at all. The best under-slab insulation is from Insul-Tarp. Its lightweight, high-tech design integrates closed cell foam and an aluminum reflective material with a protective poly coating all within three thin layers. The durable poly coating protects the insulating material from potentially damaging surfaces and is impermeable to moisture, helping it to maintain a high R-value in a minimal amount of space. The physical characteristics and overall design of Insul-Tarp make it the most effective product for insulating under concrete slabs in residential, commercial and agricultural radiant heating systems.

Insul-Tarp was designed specifically for under slab applications. Insul-Tarp provides excellent thermal performance and a vapor barrier all in one easy to use product. In most applications the ground temperature that the insulation is directly exposed to is a consistent 50-55 degrees. Foam board insulation will eventually stabilize at that temperature level. Therefore, the foam insulation provides a consistent drain on the radiant system and the slab. Because of the innovative combination of layers of insulation and aluminum, Insul-Tarp allows the slab to reach a desired temperature quicker; therefore the heating system performs more efficiently. Insul-Tarp also acts as a vapor barrier. Therefore, it becomes very effective in preventing radon gas infiltration, creating a safer environment inside your home or office.

Insul-Tarp brochure in pdf format
Insul-Tarp web site
Return to Product List