Description
ASTROFLEX 4000 SUPRA is a waterproofing membrane made of distilled bitumen modified with SBS (styrene-butadiene-styrene) polymers.
The high grade elastomeric compound ensures great elasticity, ease of application and superior bonding and tightness of all joints and overlaps.
The composite roofing system including ASTROFLEX 4000 SUPRA as underlay and ASTROFLEX 5000 SUPRA as top layer has been tested and classified in category “EXT. F.AA”, in accordance with British Standard BS 476 Part 3:2004 “External Fire Exposure Roof Tests”
