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Summary
High performance vapour-permeable roofing membrane.
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Application
Suitable for use in all pitched roofing applications.
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Description
Permavent GRAPHITE is a high-performance vapour-permeable membrane. GRAPHITE is a versatile secondary waterproofing barrier, which exceeds the requirements of BS 5534:2014+A2:2018 code of practice for slating and tiling for pitched roofs and BS 5250:2021 Management of moisture in buildings.
Features and benefits:
- Highly durable.
- Excellent tensile strength.
- Excellent tear resistance.
- BBA certified.
- UV stable for three months.
- Suitable for all types of solar panel installation.
- Taped version
- Built‑in double tape speeds up laps and seals, reducing overall membrane usage by up to 25%
- Ideal where labour or tape compatibility is a concern.
- Untaped versions
- Maximum flexibility to pair with your preferred tape or adhesive detailers.
Suitable for UK Wind Zones
- Taped Lap 1-5
- Batten Lap 1-3
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Color
Grey
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Material
Polypropylene
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Shape
Rectangle
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Length
50000 mm
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Width
1000 mm, 1500 mm
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Warranty description
15 year
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SKU Code
GRAPHITE50
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GTIN/EAN
5060747290190
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Specification
Classification data
Class (minimum)
W1.
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Third-party certification
British Board of Agrément (BBA) certificate.
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Performance criteria
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Water vapour properties
Water vapour resistance (Sd): 0.02 m.
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Fire performance
Reaction to fire: To BS EN 13501-1, Class E.
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Tensile properties
To BS EN 12311-1 (MD/ CD), 245/ 175 N/50mm.
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Material
Polypropylene, non-woven.
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Form
Spun-bonded.
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Weight (minimum)
130 g/m².
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Additional properties
Roll size
1.0 x 50 m.
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Nail shank
To BS EN 12310-1 (MD/ CD), 130/ 140 N.
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CoverageArea
50 m².
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Elongation
MD/ CD, 50/ 60%.
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Sustainability data
Contains Red List materials
No
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Country of material origin
United Kingdom
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Country of product manufacture
United Kingdom
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Material
Polypropylene
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Recyclability
Recyclable
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Recycled content
100 %
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Expected Life
Lifetime
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