The Science

Spray-applied polyurethane foam insulation is a water-blown, highly adhesive, plastic foam that is produced from the mixture of two components, isocynate and a specially formulated resin. These products are kept separate until application when they are mixed together at gun point using high pressure, high temperature, highly specialized spray application equipment.

Isocynate is the base component of many plastics. Resin is the water-based reacting ingredient. When mixed together and applied to a roof deck, wall or crawl space surface, foam insulation rapidly expands to fill and adhere to all voids in the application area, sealing out outside air and providing a high-performance weatherization barrier.

The Common Sense

According to the U.S. Department of Energy, the floors, walls and ceilings of a house are the most significant contributor to energy loss. Spray foam insulation can be used to seal each of these areas against air infiltration and energy loss.

Source: U.S. Department of Energy

High air permeability of traditional forms of insulation allows air to pass easily through walls, floors and attics where normally occurring gaps and seams exist. Temperature differences between the inside and outside of a building create energy-losing "convective" air currents in wall cavities and roof deck areas. Air infiltration in these areas reduces dramatically the performance of traditional forms of insulation such as fiberglass or blown-in cellulose.

Unlike other forms of insulation through which air can pass easily, spray foam insulation is an effective air barrier certified by third party laboratory testing.

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