High-performance self-adhesive elastomeric waterproofing membrane. It is the perfect solutions for all cases where the substrate (such a cellular thermo insulating panels) does not allow the contact with flame or hot air or wherever the use of the flame is not allowed because of safety reasons. The compound is made of distilled bitumen, modified with thermoplastic elastomers (SBS, SIS and special polymers) wich confer to the product the special adhesion properties. The reinforcement is a non woven polyester reinforced with glass fiber. The lower face is coated with anti-adhesive, siliconised polyolefinic removable film and the upper face is coated with a thermo-fusible polyolefinic film or with a non woven polypropylene film; furthermore, a 10 cm selvedge, protected by anti-adhesive film, is foreseen.