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Permavent DRY+ Low Pitch Breathable Roofing Underlay - Vapour Open Roofing Membrane

Name: Permavent DRY+ Low Pitch Breathable Roofing Underlay - Vapour Open Roofing Membrane
Brand: Permavent Ltd
SKU: 5LvYCBcbE7VaGCBVYdFJSn

Verified by manufacturer 19 hours ago

Permavent Ltd

Breathable roofing membrane.

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+44 (0)1305 766703 Website

Application

Suitable for use in both warm and cold pitched roofing applications.

Description

Permavent Dry+ is a high-performance vapour-permeable membrane for roofing applications, especially at low pitches.

Permavent Dry+ has integrated tapes to make it an airtight membrane and is suitable for all wind zones in the UK.

Features and benefits:

Suitable to adhere to BS 5250 and BS 5534.
Cold and warm roof covering.
Can be used with all solar panel types.
Three month UV stability.
W1 watertightness.
CE marked and UKCA marked.
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

General information

Color	Grey
Material	Polypropylene Guidance for specification option: Non-woven.
Shape	Rectangle
Length	50000 mm
Width	1000 mm
Warranty description	15 year

Uniclass	Pr_25_57_10_94 Vapour-permeable sheetsPrimary
CAWS	H62/235 Vapour-permeable underlay H64/307 Vapour-permeable underlay H67/290 Vapour-permeable underlay H61/22 Vapour-permeable underlay H65/22 Vapour-permeable underlay H61/235 Vapour-permeable underlay H60/235 Vapour-permeable underlay H91/305 Vapour-permeable underlay H60/22 Vapour-permeable underlay H64/22 Vapour-permeable underlay H67/24 Vapour-permeable underlay H65/235 Vapour-permeable underlay P10/65 Breather membrane H31/55 Breather membrane P10/320 Breather membrane H31/280 Breather membrane

SKU Code	DRY50+TAPED
GTIN/EAN	5060747291081

Specification data - Vapour-permeable sheets

Class (minimum)	W1.
Performance criteria	-
Water vapour properties	Water vapour resistance (Sd): 0.02 m.
Fire performance	Reaction to fire: To BS EN 13501-1, Class E.
Tensile properties	MD/ CD, 490/ 310 N/50 mm.
Material	Polypropylene, non-woven.
Form	Spun-bonded.
Weight (minimum)	220 g/m².

Roll size	1 x 50 m.
Nail shank	MD/ CD, 260/ 385 N.
CoverageArea	50 m².
Elongation	MD/ CD, 60/ 90%.
Adhesive	Double sided adhesive, air and water-tight, three-dimensionally formable acrylic adhesive.

Sustainability data

Contains Red List materials	No
Country of material origin	United Kingdom
Country of product manufacture	United Kingdom
Material	Polypropylene Guidance for specification option: Non-woven.
Recyclability	Recyclable
Recycled content As defined in clause 7.8 of BS EN ISO 14021	100 %
Expected Life	Lifetime