Glidevale Protect VP400 Plus - Breathable Roofing Underlay
Verified by manufacturer 4 months ago
1000 mm-wide rolls
1000 mm-wide rolls
BM Trada
Certificate type
A type LR pitched roofing underlay with high vapour permeability, for use in warm and cold roof constructions.
Application
Suitable for use across all pitched cold and warm roofs to provide a secondary line of defence against wind-driven rain and snow.
Description
Protect VP400 PLUS LR is a highly-vapour-permeable roof underlay. It offers low vapour resistance, helping to avoid the risk of harmful condensation, whilst remaining completely airtight.
Features and benefits:
- Highly-vapour-permeable, but completely airtight*.
- Completely watertight with >7.0 m hydrostatic head of water resistance.
- UV and heat resistant.
- Tough and durable.
- Has ‘unrestricted’ use for wind uplift in all exposure conditions in the UK and Ireland (zones 1-5 at 345 mm batten gauge), with a resistance to wind pressure of 1676 Pa, when tested to Annex A of BS 5534.
- BM TRADA independently certified.
- Helps to avoid condensation risk in the roof space in accordance with BS 5250 and NHBC requirements.
*through the body of the material at 2500 Pa pressure.
General information
Color | Grey Guidance for specification option: Embossed grey upper surface printed with blue product branding for ease of identification. Black lower surface. |
Finish | Embossed |
Material | Polypropylene |
Shape | Rectangle Guidance for specification option: Supplied as a Roll |
Length | 50000 mm |
Width | 1000 mm 1500 mm |
Uniclass | |
CAWS | H67/110 Metal roof tiling H67/5 Metal roof tiling H65/135 Ceramic slate roof tiling H65/125 Reconstituted slate roof tiling H65/115 Concrete roof tiling H65/105 Clay roof tiling H65/10 Reconstituted slate roof tiling H65/5 Roof tiling H64/110 Wood shingle/ shake roofing H64/10 Wood shingle/ shake roofing H62/145 Roof slating H62/125 Roof slating H62/105 Roof slating H62/3 Roof slating H61/105 Roof slating H61/5 Roof slating H60/120 Concrete roof tiling H60/105 Clay roof tiling H60/3 Roof tiling |
Product range |
Specification data - Vapour-permeable sheets
Standard | To BS EN 13859-1, BS 5250, BS 5534; NHBC STANDARDS. |
Third-party certification | BM TRADA Certificate. |
Performance criteria | |
Water vapour properties | Water vapour resistance to BS EN ISO 12572; 0.08 MNs/g and 0.016 Sd. |
Class (minimum) | W1.Guidance for specification option: >7.0m hydrostatic head of water resistance Manufacturer guidanceResistance to water penetration to BS EN 1928 |
Material | Polypropylene. |
Form | Non-woven, spun bonded.Guidance for specification option: Triple ply construction with waterproof and vapour permeable core, laminated and protected between two layers of non-woven spunbond material |
Weight (minimum) | 170 g/m².Guidance for specification option: 9.68 kg per roll (1000 mm wide) or 14.81 kg per roll (1500 mm wide). |
Thickness (minimum) | 0.78 mm. |
Reflective face | None. |
Tear strength | Manufacturer's standard. Guidance for specification option:
|
TensileStrength | Manufacturer's standard. Guidance for specification option:
|
Flexibility at low temperature | -40°C. |
Wind resistance | Zones 1–5. Guidance for specification option: Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres - 1676Pa |
Roll width | 1000 mm. Guidance for specification option: 50 m² per roll. |
Roll length | 50 m. |
Sustainability data
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
Material | Polypropylene |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Third party certifications
BM Trada
Protect VP400 Plus LR BM TRADA Certificate No CPS-005
BM Trada
Protect VP400 Plus LR BM TRADA Schedule No CPS-005
Literature
Glidevale Protect VP400 PLUS LR
BS 5250:2021 Management of moisture in buildings
Building Healthy Solutions for Offsite
Case studies
Millers Green Project - Heysham, Lancashire
Bespoke Development - Royston, Hertfordshire
The Loft Holiday Home
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