Glidevale Protect A1 T3 Plus - Impermeable Roofing Underlay
Verified by manufacturer 5 months ago
1000 mm-wide rolls
1000 mm-wide rolls
Heavy-duty type HR impermeable roofing underlay, designed for all cold and warm pitched roofs.
Application
Suitable for all cold and warm pitched roofs, it can also provide a secondary line of defence against wind driven rain and snow with unrestricted wind uplift use across the UK and Ireland. It can be used to provide temporary protection during the period the roof covering is applied.
Description
Protect A1 T3 Plus is a heavy-duty type HR roofing underlay, designed for all cold and warm pitched roofs in conjunction with the provision of ventilation at eaves and ridge. The product can be used with a well-sealed ceiling and a separate air and vapour control layer on the warm side of the insulation or where the ceiling is not well-sealed as in a re-roofing application.
Features and benefits:
- Fourth generation high performance underlay originally developed to overcome disadvantages of traditional Type 1F and 5U felts and second generation plastic sheet materials.
- Regularly used for new build and re-roofing schemes.
- Completely air and watertight, achieving >2.0 m hydrostatic head of water resistance.
- Has ‘unrestricted’ wind uplift resistance across the UK and Ireland at 345 mm batten gauge (2094 Pa) without the need for additional sealing tapes.
- Excellent nail tear and tensile strength.
- Easy to cut and handle, saving time on installation over traditional felts.
- Does not generate nuisance noise under wind loading.
- Absorbent under surface prevents condensate drip off.
- UV and heat resistant.
General information
Color | Black Guidance for specification option: Embossed dark grey upper surface with grey lower surface. Printed with white product branding for ease of identification. |
Finish | Embossed |
Material | Polypropylene |
Shape | Rectangle Guidance for specification option: Supplied as a Roll |
Length | 30000 mm Guidance for specification option: 1500 mm widths only. 45000 mm Guidance for specification option: 1000 mm widths only. |
Width | 1000 mm 1500 mm |
Uniclass | |
CAWS | 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 H65/105 Clay roof tiling H65/115 Concrete roof tiling H65/135 Ceramic slate roof tiling H65/125 Reconstituted slate roof tiling H67/110 Metal roof tiling H61/5 Roof slating H60/3 Roof tiling H62/3 Roof slating H67/5 Metal roof tiling H65/5 Roof tiling H64/10 Wood shingle/ shake roofing H65/10 Reconstituted slate roof tiling |
Product range |
Specification data - Plastics sheets
Material | Polypropylene. |
Purpose | Roofing underlay (impermeable). |
Standard | BS EN 13859-1, BS 5250, BS 5534; NHBC STANDARDS. |
Performance characteristics | |
Tensile strength (minimum) | Manufacturer's standard.Guidance for specification option: Machine direction (along roll):
Cross direction (across roll):
|
Tear resistance | Manufacturer's standard.Guidance for specification option: Machine direction (along roll):
Cross direction (across roll):
|
Water vapour resistance (minimum) | Manufacturer's standard.Manufacturer guidance>2.0 m hydrostatic head of water resistance. |
UV stabilization | Manufacturer's standard.Guidance for specification option: UV and heat ageing conditions: UVA lamps at 50°C for 336 hours followed by heat ageing at 70°C for 90 days. |
Form | Non-woven, spun bondedGuidance for specification option: Four ply construction with waterproof core, laminated and protected between two layers of non-woven spunbond material |
Physical properties | |
Colour | Black.Guidance for specification option: Embossed dark grey upper surface with grey lower surface. Printed with white product branding for ease of identification. |
Weight (minimum) | 190 g/m².Guidance for specification option: 8.55 kg per roll. |
Dimensions | |
Thickness (minimum) | 0.7 mm. |
Width (minimum) | 1000 mm.Manufacturer guidance45 m². |
Roll length (minimum) | 45 m. |
Execution | Manufacturer guidanceInstalled below the primary roof covering onto rafters or sarking board. Roof space ventilation should be provided at both low and high level as with all impermeable (type HR) roofing underlays irrespective of insulation type or position. Please see our ventilation products on NBS or contact us for further information on this. |
Accessories | None. Glidevale Protect FV250. Glidevale Protect SV609. Glidevale Protect In-line vents. Glidevale Protect G range vents. |
Wind resistance | Zones 1–5. Guidance for specification option: Wind uplift resistance (at 345 mm batten gauge) and 600 mm rafter centres - 2094 Pa. Unrestricted wind uplift resistance across the UK and Ireland - Zones 1-5 at 345 mm batten gauge to BS 5534. |
Flexibility at low temperature | -40°C. |
Class (minimum) | W1. Guidance for specification option: >2.0m hydrostatic head of water resistance Manufacturer guidanceResistance to water penetration to BS EN 1928 |
Sustainability data
Contains Red List materials | No |
Material | Polypropylene |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Literature
Glidevale Protect A1 T3 Plus
BS 5250:2021 Management of moisture in buildings
Building Healthy Solutions for Offsite
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