PERMAVENT ECO Breather Membrane 75m2 Roll
- Permavent Lightweight Breather Membrane
- 1.5x50m (75m2) Roll
- Roll weight, kg - 7
- Weight, g/m2 - 90
- Water tightness, class - w1
- Water vapour transmission (sd), m - 0.02
- Maximum tensile force (MD), N/50mm - 210
- Maximum tensile force (CD), N/50mm - 110
- Elongation at max. tensile force (MD), % - 80
- Elongation at max. tensile force (CD), % - 100
- Resistance to tearing MD (nail shank), N - 90
- Resistance to tearing CD (nail shank), N - 125
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A cost-effective and adaptable membrane, Permavent ECO is suitable for multiple applications. An air-tight and vapour-open membrane, Permavent ECO can be installed in roofing and walling projects
Permavent Vapour Permeable underlays are designed as a secondary barrier to wind driven rain / snow and should not be considered a primary waterproofing layer. Whilst they can withstand UV exposure for up to 3 months, it is best practice to install the primary waterproofing finish (e.g. slates, tiles etc) as soon as possible. Permavent Vapour Permeable underlay must be installed in accordance to BS 5534:2014 + A2:2018 Code of Practice. The installer must ensure compliance with all building regulations: BS 5250:2021 Management of Moisture in Buildings. Permavent Vapour Permeable underlay must be installed the correct way up, with the Permavent logo printed side uppermost. For tile and slate roof applications Permavent Vapour Permeable underlay should be laid horizontally across the rafters starting at the eaves and secured in place with either batten or membrane tape.