SOPRAFIX® Base 622 is an SBS-modified bitumen base ply for use in approved multi-ply membrane and flashing assemblies and is designed specifically for mechanical attachment to approved substrates. SOPRAFIX Base 622 is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a tough, dimensionally stable non-woven polyester mat engineered for mechanical attachment. The topside and underside are surfaced with fine mineral aggregate to facilitate subsequent cold adhesive or self adhered application.

Installation

Prior to installation, unroll SOPRAFIX Base 622 onto the roof surface and allow to relax. Place SOPRAFIX Base 622 in desired position. SOPRAFIX Base 622 is mechanically fastened through the 4 inch or 5 inch side laps using the 2 inch or 2.4 inch plates respectively following the details for the required uplift pressure. Subsequent approved inter-ply or cap ply membranes are applied to SOPRAFIX Base 622 via cold adhesive or self adhered. Refer to the SOPREMA® SBS Roofing Manual for additional application guidelines.