Summary
A type LR pitched roofing underlay with high vapour permeability, for use in warm and cold roof constructions.
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.
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
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
Product certifications
Digital objects
Color
Grey
Grey
Finish
Embossed
Embossed
Material
Polypropylene
Polypropylene
Shape
Rectangle
Rectangle
Length
50000 mm
50000 mm
Width
1000 mm, 1500 mm
1000 mm, 1500 mm
SKU Code
GVPROTECT400
GVPROTECT400
Specification
Standard
To BS EN 13859-1, BS 5250, BS 5534; NHBC STANDARDS.
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.
Water vapour resistance to BS EN ISO 12572; 0.08 MNs/g and 0.016 Sd.
Class (minimum)
W1.
W1.
Material
Polypropylene.
Polypropylene.
Form
Non-woven, spun bonded.
Non-woven, spun bonded.
Third-party certification
BM TRADA Certificate.
BM TRADA Certificate.
Weight (minimum)
170 g/m².
170 g/m².
Thickness (minimum)
0.78 mm.
0.78 mm.
Reflective face
None.
None.
Additional properties
Tear strength
Manufacturer's standard.
Manufacturer's standard.
TensileStrength
Manufacturer's standard.
Manufacturer's standard.
Flexibility at low temperature
-40°C.
-40°C.
Wind resistance
Zones 1–5.
Zones 1–5.
Roll width
1000 mm.
1500 mm.
Roll length
50 m.
50 m.
Sustainability data
Contains Red List materials
No
No
Country of product manufacture
United Kingdom
United Kingdom