Spray Foam is a two-component mixture that expands on contact to create foam that insulates, air seals and provides a moisture barrier. The blend of isocyanate and polyol resin come together at the tip of a gun which forms the foam. It is then sprayed onto: roof tiles, concrete slabs, in between wall studs, or can be sprayed into a wall-cavity through pre-drilled holes, or in most cases after the sheetrock has been completely removed.
Spray Foam expands anywhere from 30-100 times its original size to fill and seal cracks, crevices, and all other spaces to stop air leaks. Spray Foam has a much higher R-value is significantly more efficient than fiberglass and cellulose insulation. Fiberglass and cellulose allow air to pass through whereas Spray Foam is air-tight. Spray Foam completely adheres to wood substrate and even strengthens structures.
Open-cell Spray Foam is less dense and has a lower R-value. It is comprised of tiny foam cells that are filled with air and tends to be softer and more flexible. The R-value ranges from 3.4 to 4.5 per inch. It makes for an excellent sound insulator as well as insulator because at certain thicknesses, air cannot permeate through it. This drastically reduces a building’s air leakage. It may require a vapor barrier to be installed because it is not moisture resistant.
Closed-cell Spray Foam is denser and has a higher R-value. The cells are closed and are packed tighter and it makes for an excellent insulator. It has an R-value of 5.8 to 7.0 per inch and qualifies as an air barrier at 1 inch, and a vapor barrier at 2 inches. It is air impermeable and moisture resistant which makes it extremely difficult for mold and mildew to grow.
We install Spray Foam in a variety of areas through the use of a spray gun. It is typically sprayed in between wooden studs within a wall cavity. It is applied as a liquid but expands to a foam within seconds, filling the area it is in and adhering to it. At Energy Tec we remove the existing sheetrock to apply the Spray Foam, then replace it with new sheetrock.
Spray Foam meets the standards set by the International Codes Council.
Spray Foam is not toxic. It does not contain any Volatile Organic Compounds (VOC’s), formaldehyde, Hydro Chloro Flouro Carbons (HCFC’s), Chloro Flouro Carbons (CFC’s), or bleach. They are an excellent, greener alternative to conventional insulation. With proper ventilation, there are typically no hazardous fumes present in the building.
Spray Foam lasts for the lifetime of the building. When first installed the R-Value of Spray Foam is typically higher than what its advertised as, and over the course of several years depreciates to the stated R-Value. An example of this is: Spray Foam with an advertised R-Value of R7 per inch is actually R7.5 per inch when first installed and depreciates to R7 per inch where it will remain for the duration of it’s life.
Closed-cell Spray Foam does not absorb water which makes it ideal for: crawlspaces and attics.
Open-cell Spray Foam is susceptible to moisture
Energy Tec uses two kinds of Spray Foam: Demilec Spray Foam and Gaco Spray Foam. Both are higher expanding foams and allows us for a faster application process.