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Glidevale Protect A1 T3 Plus - Impermeable Roofing Underlay

Verified by manufacturer 2 months ago

1000 mm-wide rolls

BPD Building Product Design Ltd Variant:

Heavy-duty type HR impermeable roofing underlay, designed for all cold and warm pitched roofs.

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+44 (0)161 905 5700 Website

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

Pr_25_57_65_60 Plastics sheetsPrimary

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

Impermeable Underlays

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):

  • 417 N/50 mm: Unaged tensile strength to BS EN 12311-1 with mods, along roll.
  • 392 N/50 mm: Aged tensile strength to BS EN 12311-1 with mods, along roll.

Cross direction (across roll):

  • 327 N/50 mm: Aged tensile strength to BS EN 12311-1 with mods, across roll.
  • 321 N/50 mm: Unaged tensile strength to BS EN 12311-1 with mods, across roll.

Tear resistance

Manufacturer's standard.

Guidance for specification option:

Machine direction (along roll):

  • 312 N: To BS EN 12310-1 with mods, along roll.

Cross direction (across roll):

  • 377 N: To BS EN 12310-1 with mods, 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 bonded

Guidance 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 guidance

45 m².

Roll length (minimum)

45 m.

Execution

-

Manufacturer guidance

Installed 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 guidance

Resistance to water penetration to BS EN 1928


Sustainability data

Contains Red List materials

No

BIM objects

Platform Compatible Version
Revit
-

1

Literature

Glidevale Protect A1 T3 Plus

Glidevale Protect A1 T3 Plus

BS 5250:2021 Management of moisture in buildings

BS 5250:2021 Management of moisture in buildings

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