Glidevale Protect A1 Roofing Underlay 45mtr x 1mtr

NBM45/1
£34.95
( £41.94 Incl. VAT)
  • Buy 5 for £33.95
    ( £40.74 ) each and save 3%
  • Buy 10 for £32.95
    ( £39.54 ) each and save 6%
Availability: In stock
- +

Velux Summer 2019 Promotion | About Roofing Supplies

Description

Glidevale Protect A1 Roofing Underlay 45mtr x 1mtr

Glidevale Protect A1 Roofing Underlay is a third generation roofing underlay which has been developed specifically to overcome the disadvantages of traditional Type 1F felts and second-generation plastic sheet materials.

Protect A1 can be used for all pitched roof constructions (tiled and slated), whether the insulation is at ceiling joist level or at rafter level.

Technical

Technical:

  • Length: 45mtr
  • Width: 1mtr
  • Roll Size: 45 m/2
  • Material: Twin-ply construction of polypropylene non-woven spunbond layer with UV stable PP film
  • Roll weight: 7kg (including core)
  • Has unrestricted use for wind uplift in all exposure conditions in the UK & ROI

Appearance:

  • Dark grey upper surface reduces glare and takes a chalk line marking
  • Surface printed with product branding for ease of identification

Installation:

  • To be laid in accordance BS 5534: Part 1 and manufacturer's instructions

Features

  • Maintains water tightness even after exposure to water based preservatives
  • Can be used as a temporary roof covering for up to three months before the roof covering is laid
  • Excellent nail tear and tensile strength
  • Easy to cut, clean and light to handle
  • Unaffected by temperature changes
  • Proven time saving over 1F Felt
  • Unrestricted use for wind uplift in all exposure conditions in the UK and Ireland

Fixing

  • As with most underlay materials, do not lay in direct contact with any un-dried timber preservatives (whether water or solvent based).
  • To prevent UV degradation of the underlay, & to avoid sagging and ponding of the underlay behind fascia and ensure correct water discharge into the gutter, underlay support eaves trays (available separately) should be used at all gutter details.
  • 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.
  • A1 has unrestricted use from zones 1 to 5 at the maximum batten gauge of 345mm.
  • No adhesive tapes are required to restrain the overlaps.
  • Where insulation follows the rafters, there must be a ventilated air space at least 50mm deep above the insulation and beneath the underlay.
Write Your Own Review
You're reviewing:Glidevale Protect A1 Roofing Underlay 45mtr x 1mtr
Your Rating