 "Superior Modified Bitumen Systems"
metalflexSBS · Class A fire rated with unlimited slope designs· High reflectivity reduces thermal loads on roofs· Strong glass scrim reinforced membrane· Option of hot asphalt or torch application
pdf spec sheet USAGE: metalflex SBS is versatile and used in a variety of applications. metalflex SBS is used as a cap and flashing membrane in projects requiring the protection of a fire rated system or the aesthetics and the energy savings of a metal embossed surface. STORAGE: Material should be stored on end, in a dry location. Assure that materials are kept clean, and away from excessive heat or cold; do not remove labels or tear off protective covering until ready for application; store in an enclosed area where temperature is above 50° F and below 90° F. Materials should not be stored more than two high without protective bracing. APPLICATION All roof decks shall provide positive drainage, and sloped to prevent ponding water. A minimum slope of ¼" per foot is recommended by ARMA (Asphalt Roofing Manufacturers Application) and UBC (Uniform Building Code, section 3207.A). Drains and outlets should be installed to remove water completely from the roof surface. All decks must be firm, solid, free of sharp edges or depressions, free of moisture or effects of freezing, free of dust or debris and capable of supporting all anticipated deck loads. Guidelines - Torch Application: Torch application of field layers is the preferred method of application of metalflex SBS. All flashings using metalflex SBS must however be torch applied. Torch application is not approved when ambient temperature is below 35° F. Residual moisture in substrate and roofing materials can be trapped in the system and cause blistering. Do not apply roofing during precipitation, or when decks are wet from water, snow or frost.SBS modified bitumen membranes are much more flexible than APP membranes. Overheating of the underside of the membrane will cause excessive softness on the top side. In all applications the membrane should be fully bonded to the deck (metalflex systems require an interply layer unless applied over insulation). Stop torching approximately 8" from the edge of the roll to be lapped. With a roofing knife, slightly score a line through the aluminum ¼" from the termination point of the end lap. Fold the flap back so that the edge remains curled. Evenly soften the back side of the flap. Care should be taken not to overheat the flap. Apply even heat to the aluminum surface of the head lap. Keep torch flame directed away from the fold in the flap. When hot, peel off the aluminum surface and heat the membrane to be lapped. Apply pressure on the lap to ensure proper sealing. Wood, Plywood, Lightweight Concrete, Poured Concrete and Insulation Starting at low point of the roof, apply the modified SBS cap sheet perpendicular to the slope in a shingle fashion, with a minimum 3" side laps and 6" end laps. A flow of about 1/8" bitumen must be obtained around all seams. Offset end laps a minimum of 36". For slopes of 1"-2" per lineal foot apply material parallel to slope; back nail head laps 2" from the edge, 6" o.c. and side laps 8" o.c. All side laps must be staggered 18" between successive plies. TECHNICAL SERVICES Latest copy of MBTechnology's specification manual must be referenced prior to any application. A comprehensive Specification manual with isometric flashing details can be obtained through your approved distributor or by calling toll free at 1-800-621-9281. WARRANTY Application should be in strict accordance to MBTechnology’s recent specification manual. Warranty is provided subject to limitations. Duration of warranty is from 10 to 15 years depending on the system being applied. TECHNICAL INFORMATION - metalflex SBS
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