FLAGON* BSL

are non- reinforced, two- coloured, synthetic PVC-P membranes made by co- extrusion used as waterproofing layer in civil engineering and building structures. FLAGON® BSL is a high resistant to attack by the micro- organisms and perforation by roots. It has a different colour on each side. Including a coloured thin layer in the visible face of the membrane allowing for a quick visual check- up for probable damages during installation . This layer is called “signal to layer”. The upper surface (light green) , which accounts for less than 20% of the total thickness, forms the “signal layer”. The underside (dark grey) is highly resistant to puncture and perforation by roots. However, This side is not UV resistant. FLAGON® BSL membranes can be used as a part of a single- layer waterproofing system , compartmentalized or non- compartmentalized, and in Flag Vacuum System. FLAGON® BSL sheets are welded together by hot air or using a hot wedge, with manual or automatic welder following either a track or a double track method. The double- track allows for performing a pneumatic test with air. FLAGON® BSL membranes come in different thickness from 1.5 mm up to 3.0 mm to suit all project specification requirements.