Glidevale Protect VP 400 Plus Roofing membrane
Appearance Embossed royal blue upper and lower surface. Printed with product branding for ease of identification. Compatibility As with all vapour-permeable underlays, do not lay in direct contact with undried timber preservatives (whether water or solvent based). Minimum laps Roof pitch Horizontal lap up slope Vertical lap across slope 12.5° - 14° 225mm 100mm minimum 15° - 34° 150mm 100mm minimum 35° and over 100mm 100mm minimum Rolls are printed with 150mm vertical lap line to achieve easily the correct overlap. PERFORMANCE MD CD Nail tear strength (N) (EN12310-1 with mods) 160 160 Tensile strength (N/50mm) (EN12311-1 with mods) 350 310 UV & heat stability MD CD Tensile strength (N/50mm) (EN12311-1 with mods) 310 273 MD = machine direction (along roll), CD = cross direction (across roll). Nail tear strength tested to EN12310-1 with mods. Tensile strength tested to EN12311-1 with mods. UV and heat ageing conditions: UVA lamps at 50°C for 336 hours followed by heat ageing at 70°C for 90 days. Weight 180gsm2 Water vapour resistance (MNs/g) EN ISO 12572 0.11 Watertightness Pass Class W1 Wind uplift resistance 2.5kPa at 343mm batten gauge and 600mm rafter centres