Allstate is a Spray Foam Insulation Contractor in California We are a family owned company that has been in the spray foam business for over 20 years serving Fresno, Clovis, Bakersfield, Oildale and surrounding areas of Visalia California for many years. Spray polyurethane foam (SPF) is a spray-applied plastic that is widely used to insulate buildings and seal cracks and gaps, making a building or home more energy-efficient and comfortable temperature wise. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints. SPF is made by mixing and reacting unique liquid components to create foam. The liquids react very quickly when mixed, expanding on contact to create foam we use to insulate, seal gaps, and form moisture and vapor barriers. Each spray foam type and method of application offers unique benefits. There are three primary types of SPF that can be used for insulation and other specific purposes: 2lb closed cell spray foam insulation installed on the exterior of a building in california High Density Foam 3 lbs./cubic ft., closed-cell foam often used for exterior and roofing applications. spray foam insulation installed in an attic roofline of a home in california Medium Density Foam 2 lbs./cubic ft., closed-cell foam often used for continuous insulation, interior wall cavities and unvented attics. Open cell spray foam insulation installed into the walls of a home in california to save energy Low Density Foam 0.5 lbs./cubic ft., open-cell foam often used for interior wall cavity fill and unvented attic applications. Spray Polyurethane Foam Insulation Whether it is new construction, a renovation or a retrofit job, sprayed polyurethane foam insulation can be a great investment in your home.