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Injection Foam

Injection spray foam makes it easy to retrofit older homes, attics and finished basements that lack insulation with spray foam insulation. Injection foam requires drilling small (usually 1″) holes in the wall cavity so that the foam may be injected. Injection foam will fill voids and cavities around electrical wiring, plumbing and windows without having to remove plaster or drywall. A few facts about injection foam:

  • Injection foam has the highest R Value of any retrofit insulation available today
  • Injection foam helps provide an additional sound barrier to quiet street noise
  • Injection foam is environmentally safe, non-toxic, water repellent & fire resistant

Precision General Construction is now offering injection tripolymer foam insulation making it quicker and easier than ever to insulate an existing structure. Injection foam can be applied to a variety of building materials simply by drilling a small hole, injecting the spray polyurethane foam into the wall cavities, and patching the hole to its original condition. Homeowners no longer have to deal with the long, messy process involved in exposing wall framing or completely remodeling their home in order to enjoy the benefits of foam insulation.

The injection foam process makes it easier and quicker to install from the outside of the building. Specially trained professionals install the injection foam by drilling a small one-inch hole and injecting the wall cavity with spray foam. The hole is filled and the exterior siding is then patched, repaired or replaced, depending on the exterior wall material. Injection foam applications include insulation for walls, roofs, basements, and window and doorframes. The unique nature of this spray on foam is that is can conform to any shape or size and fill in virtually all cracks, crevices and holes. For more information on how spray polyurethane foam works, check out the process


Home and business owners can immediately enjoy the benefits of injection foam insulation. Most applications are complete in less than one day. As with all spray foam insulation, injection foam is fire-resistant, water-resistant, and environmentally friendly. Injection foam offers the best quality insulation for existing homes; it has the highest R-value on the market and creates a superior sound barrier. Since injection foam creates a vapor barrier and seals any cracks where air and moisture would otherwise leak into your home, it makes it an ideal application for basements and foundations. Retrofitting a home or building improves your heating and cooling efficiency and saves money. Read more about the energy saving benefits of spray polyurethane foam insulation.

If you are looking for insulation for a new construction project, check out the spray foam insulation page. Contact the specialists at Precision General Construction for more information about an in-home evaluation and estimate.