Pre-fabricated waterproofing membrane made of distilled bitumen and elastomeric polymers (SBS). PARETI is specifically developed to waterproof foundation and retaining walls, guaranteeing excellent adhesion and workability. Reinforced with a woven non woven single strand composite polyester, providing good mechanical characteristics and excellent dimensional stability. PARETI is protected on the upper surface by a woven non woven polypropylene mat. On request a special polypropylene film finish on the lower face is available.