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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.
Suitable for use across all pitched cold and warm roofs to provide a secondary line of defence against wind-driven rain and snow.
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:
*through the body of the material at 2500 Pa pressure
Color | Grey Embossed grey upper surface printed with blue product branding for ease of identification. Black lower surface. |
Finish | Embossed |
Material | Polypropylene |
Shape | Rectangle 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 |
Standard | To BS EN 13859-1, BS 5250, BS 5534; NHBC STANDARDS. |
Performance characteristics | Water vapour resistance to BS EN ISO 12572; 0.08 MNs/g and 0.016 Sd. |
Class (minimum)Resistance to water penetration to BS EN 1928 | W1.>7.0m hydrostatic head of water resistance |
Material | Polypropylene. |
Form | Non-woven, spun bonded.Triple ply construction with waterproof and vapour permeable core, laminated and protected between two layers of non-woven spunbond material |
Third-party certification | BM TRADA Certificate. |
Weight (minimum) | 170 g/m².9.68 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.
|
TensileStrength | Manufacturer's standard.
|
Flexibility at low temperature | -40°C. |
Wind resistance | Zones 1–5. Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres - 1676Pa |
Roll width | 1000 mm. 50 m² per roll. |
Roll length | 50 m. |
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
Platform | Compatible | Version | Certified to |
---|---|---|---|
![]() | - | 1 | 1 |
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