DATA SHEET Product description STAR prefabricated waterproofing membranes are produced by co-extruding a bituminous dispersion of compatibilizing agents in a copolymer matrix with a sized non-woven polyester fabric reinforcement mat with lengthwise mineral fibers embedded in the membrane. Lower face is coated with TEXTENE preformed textured polymer fiber film. Top face features a saturated ceramicized, talc surface treatment or coated with TEXTENE. For the STAR ARD version, the top face is surfaced with slate chippings. STAR membranes are highly adhesive to ensure better anchorage to the substrate and stronger joins between sheets. Membrane formulation provides excellent cold flexibility and elasticity. STAR membranes are supplied in taped rolls, each accompanied by a Quality Control Certificate. They comply with CE marking requirements where applicable, and contain no asbestos, tar or other dangerous substances. Recommended uses STAR membranes are designed for waterproofing applications of all kinds. In particular, they are ideal for use in cold climates or during cold weather. For membrane versions to be used in roofing, foundation and below-grade applications, see the table below(1). For detailed documentation and guidance regarding product application, consult IMPER ITALIA srl Technical Services. (1) In compliance with applicable standards and AISPEC-MBP guidelines. Methods of application Waterproofing performance will depend to a significant extent on application methods. Substrates must be thoroughly cleaned and treated with a suitable primer applied by brush, roller or spray at a rate of 0.2 to 0.3 liters/m2. Primer coverage will depend on substrate porosity. STAR membranes are applied using a propane torch. Special care must be taken at joins, which must be overlapped. Membrane must be laid to allow side laps of 8 to 10 cm and end laps of 12 to 15 cm. For detailed documentation and guidance in selecting the most appropriate procedures for any job, consult IMPER ITALIA srl Technical Services, who will be happy to provide assistance and advice in designing special waterproofing systems and helping you make the best use of these materials.

(STAR continued) Notes: (2) In compliance with applicable standards and AISPEC-MBP guidelines. (3) ±2 for glass tissue reinforcement. (4) Declared value or failure away from joints. (5) Not determined, because not relevant for application. (6) Euroclass. As IMPER ITALIA srl has no control over how or where its products are supplied (e.g., over substrates, service conditions, or compliance with instructions), the company cannot accept any liability arising from the use of its product or the results obtained. IMPER ITALIA srl pursues a policy of continuous product improvement. As a result, the...