Spray Foam Insulation

Spray foam insulation is a high-performance insulation system applied as a liquid that expands into a rigid or semi-rigid foam, sealing gaps while providing thermal resistance. It is commonly used in lofts, roof slopes, floors, rim joists and hard-to-reach voids where traditional insulation can leave air leaks, but it must be specified and installed correctly to avoid trapping moisture or restricting ventilation. Because spray foam changes how a building breathes, quality matters. A competent installer will assess your property type, roof construction, existing ventilation paths, and any signs of damp or timber decay before recommending open-cell or closed-cell foam, thickness, and coverage. They should also explain how the work affects condensation risk, fire performance, access to services, and future maintenance - especially in roof spaces. TradeSupermarket connects you with spray foam insulation specialists across the UK, helping you compare availability, experience and customer reviews in one place. Each listing is designed to make it easy to check what the company installs (open-cell vs closed-cell), whether they offer ventilation upgrades, and whether they can provide documentation needed for warranties or future property sales. For peace of mind, always choose a properly insured professional who follows manufacturer instructions and relevant UK standards, and who will leave your home safe and tidy. If you are dealing with legacy or problematic spray foam in a loft, you can also find specialists who can survey, partially remove, or fully remove foam and propose compliant alternatives to restore ventilation and protect the structure.