Because RetroFoam wall insulation is typically installed from the exterior we can insulate most any existing home. Depending on the type of siding on your home the process may vary slightly. Generally, we will remove a small section of your siding and drill a hole in each stud cavity. The RetroFoam is injected into each cavity and our install team plugs each of the holes. After any cleanup is completed your siding is put back on. The majority of homes can be completed in one day and the benefits are immediate! The easy, quick, and mess-free installation of RetroFoam into the wall cavities eliminates the need for construction, wall tear down, or movement of furniture.