SOPRA™ 4897
SOPRA™ 4897
SOPRA 4897 is an SBS-modified bitumen venting base sheet for use in approved multiply membrane and flashing assemblies. SOPRA 4897 is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a high quality random glass fiber mat. The topside is surfaced with fine mineral aggregate while the underside is surfaced with mineral granules to facilitate venting characteristics.
Product Properties
- Component Base
- Installation Method Mechanically Attached
- Reinforcement Glass Fiber
- Thickness 120 mils (3.1 mm)
- Topside Sanded
- Underside Sanded
Installation
Prior to installation, unroll SOPRA 4897 onto the roof surface and allow to relax. Position SOPRA 4897 in desired position and fasten to nailable substrate. Subsequent approved inter-ply or cap ply membranes are applied to SOPRA 4897 via cold adhesive or heat welding. Refer to the SOPREMA SBS Roofing Guide for additional application guidelines.
Testing & Approvals
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Placer County Water Agency – Auburn, California
In 2015, the Placer County Water Agency took on a tear-off roofing project, in which SOPREMA products were used. SOPREMA was the right choice for this project because the breadth of products met the designer’s needs, including meeting California Title 24 energy efficiency standards with the use of ENERGY STAR® rated SOPRASTAR® Flam. Another appealing aspect was the versatility of SENTINEL® P150, which allowed coverage for the vertical walls throughout the roofing system.
American Airlines Trinity Campus – Fort Worth, Texas
When American Airlines, the world’s largest airline by fleet size, wanted to bring 12,000 employees together at a centralized location, it was a big job, to say the least.