VapR-free is a multi layer laminate film composite made of polyolefin materials, resulting in a pitched roof underlay that has high vapour permeability but is also highly water resistant.
VapR-free has been approved for use in all 5 wind speed zones due to the unique integral acrylic tape that is applied when produced.
VapR-free is suitable for both Commercial and Domestic buildings, it is the ideal roof underlay for Warm and Cold Pitched Roofs.
Manufactured without the use of CFC’s VapR-free is 100% recyclable and is very durable with high tensile and nail tear strength properties. These, coupled with excellent UV and heat stability properties ensure a life-span in excess of 30 years.
VapR-free membrane has recieved BBA Approval and complies with BS5534: 2014 Code of Practice for slating and tiling for pitched roofs.
Recommendations for the use of vapour permeable membranes in pitched roofs are contained in BS 5250 : 2002 ‘Code of practice for control of condensation in buildings’.
|Water Vapour Resistance||Sd (M)||c.0.02|
|Water Vapour Transmission ||g/m²/24hr||1065|
|Exposure Times UV Degradation||-||3 months|