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NBS Source

Application

Warm and cold pitched roofing applications.

Description

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 345 mm batten gauge (resistance to wind pressure 1569 Pa) without the need for additional counter batten or integral tape. Achieves unrestricted use for wind uplift Zones 1-5 at 310 mm batten gauge (2121 Pa) or when installed on sarking board.


Features and benefits:

  • Superior airflow permeability –>78 m³/m²/hr at 50 Pascals to BS EN 12114.
  • Hydrophobically treated underlay which provides additional water shedding qualities and water penetration resistance.
  • Highly vapour permeable with a performance better than required in BS 5250. 
  • Completely watertight with >1.0 m head of water resistance.
  • Does not generate nuisance noise under wind loading.
  • BM TRADA independently certified and CE marked for added reassurance in specification.
  • Achieves Zones 1–4 at 345 mm batten gauge (1569 Pa) wind uplift resistance to BS 5534 
  • Achieves unrestricted use for wind uplift Zones 1-5 at 310 mm batten gauge (2121 Pa) or when installed on sarking board.
  • Tough and durable, yet easy to cut and handle, with flexibility at low temperatures.
  • Helps to avoid condensation risk within the roofspace in accordance with BS 5250 and NHBC requirements.
  • Can be used in cold roof construction without additional roofspace ventilation as permitted by NHBC.

General information

Color

Beige upper surface, White lower surface

Brown

Product branding and a grid printed in black for ease of identification and cutting on site.

White

Finish

Embossed

Material

Polypropylene

Hydrophobically treated.

Shape

Rectangle

Length

50000 mm

Width

1000 mm

1500 mm

Uniclass

Pr_25_57_10_94 Vapour-permeable sheetsPrimary

CAWS

H67/110 Metal roof tiling

H61/5 Roof slating

H60/3 Roof tiling

H62/3 Roof slating

H64/10 Wood shingle/ shake roofing

H65/10 Reconstituted slate roof tiling

H60/120 Concrete roof tiling

H60/105 Clay roof tiling

H61/105 Roof slating

H62/125 Roof slating

H62/105 Roof slating

H62/145 Roof slating

H64/110 Wood shingle/ shake roofing

H65/135 Ceramic slate roof tiling

H65/105 Clay roof tiling

H65/115 Concrete roof tiling

H65/125 Reconstituted slate roof tiling

H67/5 Metal roof tiling

H65/5 Roof tiling

Specification data - Vapour-permeable sheets

Standard

To BS EN 13859-1, BS 5250, BS 5534; NHBC STANDARDS.

Performance characteristics

Water vapour resistance to BS EN ISO 12572; 0.04 MNs/g and 0.008 Sd(m).

Class (minimum)

W1.

Resistance to water penetration to BS EN 1928


Material

Polypropylene.

Hydrophobically treated.

Form

Spun-bonded.

Triple ply construction incorporating hydrophobically treated melt-blown technology core, sandwiched between two layers of non-woven spunbond material


Third-party certification

BM TRADA Certified.

Weight (minimum)

159 g/m².

9 kg per roll (1000 mm wide) or 13 kg per roll (1500 mm wide).

Thickness (minimum)

0.70 mm.

Reflective face

None.

Tear strength

MD: 235 N; CD: 266 N.

To BS EN 12310-1 with mods (along roll).

TensileStrength

Manufacturer's standard.

  • MD: 270 N/50 mm: 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.

Air permeability

78.71 (m³/m²/h).

@ 50 Pascals to BS EN 12114.

Wind resistance

Zone 1–4.

Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres.

Flexibility at low temperature

-40°C.

Water vapour resistance

0.04 MNs/g; 0.008 Sd(m).

Water vapour resistance to BS EN ISO 12572.

Roll width

1000 mm.

50 m² per roll.

1500 mm.

75 m² per roll.

Roll length

50 m.

Environmental information

Contains Red List materials

No

Country of product manufacture

United Kingdom

Digital objects

Platform Compatible Version Certified to
Revit
-

1

1

Download now from NBS National BIM Library

Literature

Glidevale Protect Viking Air LR Air & Vapour Permeable Underlay

Glidevale Protect Viking Air LR Air & Vapour Permeable Underlay

Third party certifications

BM Trada

BM Trada

Protect Viking Air BM TRADA Certificate No CPS-025

BM Trada

BM Trada

Protect Viking Air BM TRADA Schedule No CPS-025

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