Spray foam roofing (SPF) is a type of roofing material that consists of a liquid polyurethane that expands into a foam, creating a solid layer across the roof surface. This roofing system is valued for its excellent insulation properties and ability to form a seamless, waterproof barrier, which can help lower energy costs. The installed cost per square foot for spray foam roofing can vary widely depending on factors like roof size, complexity, geographic location, and the thickness of foam applied. On average, homeowners might expect to pay between $3 to $7 per square foot for the full installation, including the foam, protective coatings, and labor. While it can seem costly upfront, the energy savings and longevity often make it a worthwhile investment.
If you're considering spray foam roofing or suspect problems with an existing SPF roof, simple checks you can safely do include looking for soft spots, cracks, or blisters on the foam surface, which might suggest water intrusion or foam degradation. It helps to observe how the roof handles water during rainfall—pooling or leaks inside the home are red flags. A moisture meter or infrared camera, which some homeowners rent or buy, can identify hidden wet areas but use these with care and guidance. When hiring a contractor, ask how they handle foam thickness for energy codes and how they ensure warranty coverage if the foam degrades or leaks. Also, inquire about their experience with local climate challenges, since SPF performance can vary with environmental conditions. Calling a professional is essential if you notice significant damage, persistent leaks, or if your roof is reaching the end of its warranty period.