For over 30 years, Siplast Teranap has met the needs of demanding plaza deck waterproofing applications. The torch-applied, two-ply Teranap System is based on proven roof membrane design. The elastomeric base ply, Paradiene 20, is engineered to retain its elasticity through the rigors of deck movement. The top ply, Teranap, consists of a non-woven polyester mat impregnated and coated with SBS-modified bitumen. The surface of the sheet is protected by a polyester film. Rolls of Teranap are two meters wide and 20 meters long. This coverage means a significant reduction in the number of seams as compared to projects using conventional modified bitumen waterproofing products.