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PRODUCT DESCRIPTION <br />BITUTAK® MB is a 3.8 mm (150 mils) APP (Atactic Polypropylene) modified bitumen <br />roofing membrane for approved multi-ply membrane and flashing assemblies. <br />BITUTAK’s exclusive APP polymer and asphalt formulation yield excellent weathering <br />characteristics and long-term durability. Reinforced with a heat-resistant, non-woven <br />polyester mat provides added strength and puncture resistance to the membrane. <br />BITUTAK® MB is backed with a plastic burn-off film for ease of heat welding <br />installation. For your next roofing project, discover how BITUTAK® delivers exceptional <br />waterproofing performance at a fantastic value. <br />PHYSICAL PROPERTIES <br />PROPERTY / UNIT MD XMD ASTM TEST METHOD <br />Peak Load @ 0°F (-18°C); lbf/in (kN/m)145 (25.4)105 (18.4)D5147 <br />Elongation at Peak Load @ 0°F (-18°C); %30 25 D5147 <br />Peak Load @ 73.4°F (23°C); lbf/in (kN/m)110 (19.3)75 (13.1)D5147 <br />Elongation at Peak Load @ 73.4°F (23°C); %45 45 D5147 <br />Tear Strength @ 73.4°F (23°C); lbf (N)150 (667)115 (512)D5147 <br />Dimensional Stability; %< 0.5 < 0.5 D5147 <br />Low Temperature Flexibility; °F (°C)3 (-16)3 (-16)D5147 <br />Compound Stability; °F (°C)> 275 (135)> 275 (135)D5147 <br />PRODUCT INFORMATION <br />ASTM STANDARD LENGTH (ft)WIDTH (in)THICKNESS (mils) WEIGHT (lb)COVERAGE (sq ft) <br />D6222 <br />Type 1, Grade S <br />32.8 <br />(10.0 m) <br />39.4 <br />(1.0 m) <br />150 <br />(3.8 mm) <br />89 <br />(40.4 kg) <br />97.9 <br />(9.1 sq m) <br />FIRE SAFETY GUIDELINES <br />Torch application of BITUTAK® MB may threaten fire if strict application standards and procedures are <br />not followed. All operators of torch equipment should be thoroughly trained. In addition, a fire watch should <br />be maintained on the project for no less than 60 minutes following the last heat-welded work of the day. <br />An ABC-approved fire extinguisher should be on the site for each torch in operation. <br />PACKAGING & STORAGE <br />Each pallet contains 20 rolls. Rolls should be stored on end, on raised platforms, and protected from the weather. <br />INSTALLATION <br />Surface Preparation The substrate should be clean, stable, dry, free of any loose materials, grease, and other <br />contaminants, which may compromise the product’s performance. <br />Minimum Installation Temperature 40°F (4°C) <br />Installation Install with traditional torch roofing techniques ensuring proper heating of the roofing material <br />as not to expose the reinforcement. Apply consecutive rolls providing a minimum 6-inch end <br />lap and 3-inch side lap. A ¼ inch bleed-out should be visible at all seams. <br />Recommendations/ <br />Restrictions <br />When heat welding on combustible substrates (wood, plywood, and OSB), a protective coverboard <br />must be installed before application. Keep any combustible material away from an open flame. <br />BITUTAK MB <br />PRODUCT DATA SHEET <br />BY <br /> PD10455-REV. 027721 <br />® <br />All values shown are nominal and subject to normal manufacturing tolerances. <br />® <br />www.soprema.us <br />310 Quadral Drive, Wadsworth, Ohio 44281 <br />TOLL FREE: (800)356-3521 | TEL: (800)334-0066