Single-layer, reinforced Alpa® polymer modified, self-finished, bitumen waterproofing membrane system, suitable for large span structures.

The top surface is finished with coloured ceramic granules or mineral slate chippings, while the under surface is finished with a loose silicone film. Minimum selvedge width is 100 mm.

Features and benefits:

• Mechanical fastening with torch-on/ hot air welding to form a continuous layer.
• Zero fall (inverted) and pitched roofs.
• Approved for all substrates (concrete slab, profiled metal deck and timber deck).
• Ageing characteristics with laboratory accelerated ageing tests determined a service life in excess of 60 years.
• Includes Air and Vapour Control Layers (AVCLs), tapered or flat board thermal insulation, underlayers and robust, versatile capsheets, self finished in a choice of colours to suit roof designs of differing complexity.
• BBA approved, accepted by all third party building warranty providers such as LABC and NHBC.
• Fully compliant with The Building Regulations and all relevant British and harmonized European standards.
• Approved Document B: Fire Safety compliant.
• Achieves fire rating EXT.F.AA when tested in accordance with BS 476 Part 3: 2004, incorporating Amendment 1: 2006 and Amendment 2: 2007.
• ISO 9001 and 14001 accredited.

Application method:

• Mechanical fastening to form a continuous layer with torch-on/ hot air welded laps and detailing.

Platform	Compatible	Version	Certified to
IFC	-	1	2.1
Revit	-	1	2.1