Premium type LR roof underlay with high air and vapour permeability, for use in warm and cold pitched roof construction.
Warm and cold pitched roofing applications.
Glidevale Protect Viking Air is a new, premium type LR roof underlay with high air and vapour permeability, for use in warm and cold pitched roof constructions, helping to avoid the risk of harmful condensation without the need for additional ventilation as permitted by the NHBC for a cold roof construction. Designed with market leading air permeability at 50 Pascals to BS EN 12114, the underlay also achieves wind uplift resistance to Zones 1-4* at 345 mm batten gauge to BS 5534, ensuring wide coverage across the UK and throughout Ireland.
*Meets Zones 1-4 at 345mm batten gauge (resistance to wind pressure 1569Pa) without the need for additional counter batten or integral tape. Achieves unrestricted use for wind uplift Zones 1-5 at 310mm batten gauge (2121Pa) or when installed on sarking board.
Features and benefits:
Beige upper surface, White lower surface
Product branding and a grid printed in black for ease of identification and cutting on site.
1.0 x 50 m
1.5 x 50 m
J42/130 Cold deck roof covering
J42/110 Warm deck roof covering
To BS EN 13859-1 / BS 5250 / BS 5534 / NHBC STANDARDS.
Water vapour resistance to BS EN ISO 12572; 0.04 MNs/g and 0.008 Sd(m).
Resistance to water penetration to BS EN 1928
Triple ply construction incorporating hydrophobically treated melt-blown technology core, sandwiched between two layers of non-woven spunbond material
BM TRADA Certified.
Protect Viking Air does not require additional ventilation for warm or cold pitched roofs, however if an airtight roof covering is used such as fibre cement slates or metal tiles, it would be necessary to ventilate the batten space. Ventilation also required when installed with closed jointed sarking.
Glidevale Protect Viking Air
MD, 235 N / CD, 266 N.
To BS EN 12310-1 with mods (along roll).
MD, 270 N/50 mm / CD, MD,
Unaged tensile strength to BS EN 12311-1 with mods.
MD, 240 N/50 mm / 200 N/50 mm.
Aged tensile strength to BS EN 12311-1 with mods.
@ 50 Pascals to BS EN 12114.
Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres.
Flexibility at low temperature
Water vapour resistance
0.04 MNs/g / 0.008 Sd(m).
Water vapour resistance to BS EN ISO 12572.
Contains Red List materials
Country of product manufacture
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