- Vapour permeable with a performance better than required in BS 5250
Completely watertight providing at least 2.0m in water resistance
Good all round performance for its weight
UV and heat resistant
Tough and durable
Can be used as a temporary roof covering
BMTRADA Independently certified
Helps to avoid condensation risk
The Protect VP300 Roofing Underlay is available in 50 square metre or 75 square metre rolls. It is a medium weight vapour permeable roof underlay, the VP300’s vapour resistance exceeds the level required by BS 5250 and also has a higher strength than many other underlays in its class. Suitable for all pitched roofs particularly fully supported applications. Protect VP300 is CE marked and certified by BM TRADA . It provides a cost effective solution when higher specified roof underlays are not required.
Protect VP300 can provide a secondary line of defence against wind driven rain and snow, the reduction in wind uplift loads on the roof covering and is also able to be used as a temporary roof covering
before the slates or tiles are applied.
Roll width: 1.0 or 1.5m and Roll length: 50m
Roll total area: 50 or 75m2 and Roll weight: 6.55 or 9.83kg
Embossed grey upper and white lower surface. Printed with product branding for ease of identification.
As with all vapour-permeable underlays, this product should not be laid in direct contact with un-dried timber preservatives. This applies to both water and solvent based preservatives. Protect OFV Eaves Skirt should be used at all gutter details.
|Nail tear strength (N) to EN 12310-1 with mods||140||198|
|Unaged tensile strength (N/50mm) to EN 12311 with mods||225||160|
|Aged tensile strength (N/50mm) to EN 12311 with mods||190||130|
|Flexibility at low temperature||-40° C|
|Water Vapour resistance to EN ISO 12572||0.17 MNsg|
|Watertightness||Class W1 >2.0m hydrostatic head resistance|
MD = machine direction (along roll), CD = cross direction (across roll). UV and heat ageing conditions: UVA lamps at 50°C for 336 hours followed by heat ageing at 70°C for 90 days.
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