Glidevale Protect Viking Air
Application

Warm and cold pitched roofing applications.

Description

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 when used with a well-sealed ceiling. Designed with 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:

  • Superior airflow permeability – >78 m³/m²/hr @ 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 >1.0m 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 wind uplift resistance to BS 5534.
  • Achieves unrestricted use for wind uplift Zones 1-5 at 310mm batten gauge (2121Pa) 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

White

Material

Polypropylene

Hydrophobically treated.

Shape

Roll

Size

1.0 x 50 m

Roll size.

1.5 x 50 m

Roll size.

Uniclass 2015

Pr_25_57_10_94 Vapour permeable sheetsPrimary

CAWS

J42/110 Warm deck roof covering

J42/130 Cold deck roof covering

Specification data - Vapour permeable sheets Enhanced data

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.

To EN 1928.

Material

Polypropylene.

Hydrophobically treated.

Form

Spun-bonded.

Third-party certification

BM TRADA Certified.

Weight (minimum)

159 g/m².

Thickness (minimum)

0.70 mm.

Reflective face

None.

Execution

Installed below the primary roof covering onto rafters or sarking board.

Product Reference

Viking Air

Tear strength

235 N.

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

266 N.

To EN 12310-1 with mods (across roll).

TensileStrength

270 N/50 mm.

Unaged tensile strength to EN 12311 with mods.

230 N/50 mm.

Unaged tensile strength to EN 12311 with mods.

240 N/50 mm.

Aged tensile strength to EN 12311 with mods.

200 N/50 mm.

Aged tensile strength to EN 12311 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.

Environmental information

Contains Red List materials

No

Country of product manufacture

United Kingdom

Recycled content

Recycled materials will vary.

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