Polyurethane foams are produced by reacting an equal ratio of di- or polyisocyanurates with polyols, in the presence of water, which acts as the blowing agent. This material is extremely effective thermal insulation qualities and high strength to weight ratio at low temperatures. These inherent physical characteristic enable it to perform extremely well with other alternatives products Rigid insulation, above 90% closed cells, remains durable for years, no thermal bridges, high mechanical strength, maintains insulation effectively.