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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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Related Projects

170 East 77th Street – New York, New York

The fully reinforced system membrane included ALSAN RS 276 primer, ALSAN RS 230 field and ALSAN RS 230 flash reinforced with ALSAN RS fleece. ALSAN RS 233 self leveling mortar, a broadcast of #0 quartz silica aggregate and five distinct top coat colors finished off this incredible rooftop terrace.

Fishers Island Club – Fishers Island, New York

When it was time to build a new building at the club, SOPREMA products were called into action. On this new building, our COLPHENE® 3000 product was chosen to waterproof the foundation because of its superior strength and adhesion.