PU foam spray, or polyurethane foam spray, is an expandable sealant used for filling large gaps, cracks, and holes, providing excellent insulation (thermal/sound) and bonding various materials like wood, concrete, and metal, ideal for sealing around doors, windows, pipes, and electrical outlets to improve energy efficiency and prevent drafts. It's applied from a can, expands to fill voids, hardens quickly, and can be cut or trimmed after curing, but requires good ventilation and eye protection during use. Sealing & Filling: Fills irregular gaps and holes where caulk fails.
Insulation: Reduces air leaks, improving thermal and sound insulation for energy efficiency.
Bonding: Adheres to wood, concrete, metal, and plastic.
Pest Control: Blocks entry points for rodents and insects.
Applications: Windows, doors, pipes, electrical outlets, roof