Polyfoam™ Slimline Zero Membrane - Water Flow Reducing Layer

For use as a separating and water flow reducing layer (WFRL) in inverted flat roof systems and green roofs.

For full application details please refer to BBA certificate 17/5454.

A high performance, thermally bonded tri-laminate of polypropylene; spunbonded (outer layers) and microporous (inner layer).

Features and benefits:

• It is used in combination with Polyfoam Roofboards (specified separately) as part of the Polyfoam Inverted Roof System for inverted and green roofs.
• Improves the thermal performance of protected membrane flat roofs by reducing the amount of rain water flowing between the insulation and the waterproofing membrane.
• Improves the thermal performance of inverted and green roofs.
• Waterproof and water vapour permeable.
• Enables thinner insulation and less ballast to be used.
• BBA certified.

Technical characteristics:

• Water resistance: able to resist a 1.5 m-head of water.
• Consult manufacturer's literature for further details.

Typical project types:

• Mixed use
• Domestic
• Industrial
• Commercial
• Education