Glidevale Protect A1®

Application

The product can be used for all pitched roof constructions (tiled and slated), whether the insulation is at ceiling joist level or at rafter level.


Description

Protect A1® is a heavy-duty type HR roofing underlay, designed for all cold and warm pitched roofs in conjunction with the provision of ventilation at eaves and ridge. The product can be used with a well-sealed ceiling and a separate air and vapour control layer on the warm side of the insulation or where the ceiling is not well-sealed as in a re-roofing application.



Features and benefits:

  • Completely water and airtight.
  • Third generation pitched roofing underlay developed to overcome the disadvantages of traditional Type 1F felts and second generation plastic sheet materials.
  • Excellent nail tear strength and tensile strength.
  • Has ‘unrestricted’ use for wind uplift in all exposure conditions in the UK and Ireland at 345mm batten gauge (1732Pa) without the need for additional sealing tapes.
  • UV and heat resistant.
  • Absorbent under surface prevents condensate drip-off.
  • Embossed dark grey upper surface reduces glare and takes a chalk line marking.
  • Does not generate noise under wind loading.
  • Easy to cut, clean, light to handle and unaffected by temperature changes.
  • CE marked and BM TRADA certified. 

General information

Finish

Embossed

Color

Black

Dark grey on upper and lower surface. Printed with white product branding for ease of identification.

Material

Polypropylene

Shape

Roll

Size

1.0 x 30 m

1.0 x 45 m

1.5 x 30 m

1.5 x 45 m

Uniclass 2015

Pr_25_57_51_66 Polymeric membranesPrimary

CAWS

J42/110 Warm deck roof covering

J42/130 Cold deck roof covering

Specification data - Polymeric membranes Enhanced data

Material

Polypropylene.

Standard

BS EN 13859-1, BS 5250, BS 5534, NHBC STANDARDS.

Performance characteristics

Unrestricted wind uplift resistance across the UK and Ireland - Zones 1-5 at 345 mm batten gauge to BS 5534.

Third-party certification

BM TRADA Certified.

Width (minimum)

1.0 m.

1.5 m.

Thickness (minimum)

0.6 mm.

Colour

Dark Grey.

Embossed dark grey upper and lower surface. Printed with white product branding for ease of identification.

Product Reference

Glidevale Protect A1

Tear strength

230 N.

To BS EN 12310-1 with mods, along roll.

234 N.

To BS EN 12310-1 with mods, across roll.

TensileStrength

287 N/50 mm.

Unaged tensile strength to BS EN 12311-1 with mods, along roll.

274 N/50 mm.

Unaged tensile strength to BS EN 12311-1 with mods, across roll.

285 N/50 mm.

Aged tensile strength to BS EN 12311-1 with mods, along roll.

238 N/50 mm.

Aged tensile strength to BS EN 12311-1 with mods, across roll.

Weight

145 g/m².

Form

Non-woven, spunbonded.

Twin ply construction with a polymeric compositions, comprising of a polypropylene non-woven layer, coated on one surface with a continuous film of polypropylene / polyethylene blend


Class (minimum)

Resistance to water penetration to BS EN 1928


W1.

>2.0m hydrostatic head of water resistance


Wind resistance

Zones 1-5.

Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres - 1732Pa


Execution

Installed below the primary roof covering onto rafters or sarking board.

Roof space ventilation should be provided at both low and high level as with all impermeable (type HR) roofing underlays irrespective of insulation type or position. Please see our ventilation products on NBS or contact us for further information.


Roll length

30 m.

45 m.

Environmental information

Contains Red List materials

No

Country of product manufacture

United Kingdom

Digital objects

Platform Compatible Version Certified to
Revit
-

1

1

Download now from NBS National BIM Library

Literature

Glidevale Protect A1®

Glidevale Protect A1®

Third party certifications

BM Trada.

BM Trada.

BM Trada.

BM Trada.

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