Sarnafil G476-SA

Self-adhesive PVC-P single-ply membrane and a foam backing coated with a pressure-sensitive adhesive, for inverted ballasted & green roof systems.

Sarnafil G membranes are manufactured using a state of the art extrusion coating process that eliminates shrinkage and plastic memory and produces a dynamically stable membrane.

Performance:

Certified by BBA, in their opinion, to have a "life expectancy in excess of 40 years" for exposed applications, with periodic maintenance as stated below.

"A planned maintenance cycle, including inspections by the Certificate holder at minimum intervals of five years, should be introduced if an extended service life is required. The Certificate holder can advise on methods of extending the service life. This could include the use of thicker membranes, specific maintenance requirements or localised replacement and repair."

Should the maintenance cycle not be followed Sarnafil G/S membranes have been given, by the BBA in their opinion, a life expectancy of "in excess of 35 years".

Installation:

Sarnafil G476-SA is self-adhered directly to approved substrates primed with Sarnafil Primer 610/600. Side laps are heat welded using the 80mm wide salvage edge, end joints are butted together and weathered using Sarnafil G410-EL membrane.

Installation is carried out by Sarnafil trained contractors.