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Permavent RED Breathable Roofing Underlay - Vapour Open Roofing Membrane

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Taped 50

Permavent Ltd Variant:

Three-layer air and vapour open membrane for use as a pitched roof underlay.

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Application

Suitable for use in all pitched roofing underlay applications.

Description

Permavent RED, a heavy-duty vapour-permeable roof membrane with superior tensile strength and nail-tear resistance. Permavent Red provides a high-performance secondary barrier to wind and rain both during and following the construction process.

Features and benefits:

  • Strong breather membrane.
  • Resilient roofing underlay.
  • Suitable for use with solar panels.
  • W1 water resistance.
  • BBA certified.
  • Three-layer membrane.

Available in three formats

  • Taped 50 – 1 m × 50 m roll with integrated double‑sided tape
  • Untaped 50 – 1 m × 50 m roll, ready for use with site‑chosen tapes or sealants
  • Untaped 75 – 1.5 m × 50 m roll for wider coverage when desired

General information

Color

Red

Material

Polypropylene

Guidance for specification option:

Non-woven.

Shape

Rectangle

Length

50000 mm

Width

1000 mm

1500 mm

Warranty description

15 year

Uniclass

Pr_25_57_10_94 Vapour-permeable sheetsPrimary

CAWS

H61/235 Vapour-permeable underlay

H60/235 Vapour-permeable underlay

H31/280 Breather membrane

H67/290 Vapour-permeable underlay

H60/22 Vapour-permeable underlay

H65/235 Vapour-permeable underlay

H67/24 Vapour-permeable underlay

H62/235 Vapour-permeable underlay

H61/22 Vapour-permeable underlay

P10/65 Breather membrane

H31/55 Breather membrane

SKU Code

RED50TAPED

GTIN/EAN

5060747291005

Specification data - Vapour-permeable sheets

Standard

To BS EN 13859-1.

Class (minimum)

W1.

Third-party certification

British Board of Agrément (BBA) certificate.

Performance criteria

-

Water vapour properties

Water vapour resistance (Sd) to EN 12572: 0.02 m.

Fire performance

Reaction to fire: To BS EN 13501-1, Class E.

Tensile properties

To BS EN 12311-1 (MD/ CD), 350/240 N/50mm.

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

100%.

Material

Polypropylene, non-woven.

Form

Spun-bonded.

Weight (minimum)

160 g/m².

Roll size

1 x 50 m.

Nail shank

MD/ CD, 140/ 230 N.

CoverageArea

50 m².

Elongation

MD/ CD, 70/ 70%.

Adhesive

Double sided, 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

Literature

RED50-01w - Product Data Sheet

RED50-01w - Product Data Sheet

RED75-01w - Product Data Sheet

RED75-01w - Product Data Sheet

RED50T-01w - Product Data Sheet

RED50T-01w - Product Data Sheet

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