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GPU Manually Operated, White Polyurethane Top-Hung Roof Window with GIU Sloping Fixed Window Below

Verified by manufacturer 4 months ago

VELUX Company Ltd

Manually operated, maintenance free, white polyurethane, top hung roof window with additional lower fixed element on roof pitches 15–55° (75°).

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+44 (0)1592 778873 Website

Application

For roof pitches of 15–55° and up to 75° with special springs.

Description

Features and benefits:

  • Top-hung window opens to any position up to 45° to allow panoramic, uninterrupted views.
  • Maintenance free polyurethane moulding with white finish on timber core.
  • Meets requirements for emergency escape.
  • Additional fixed element beneath offers a great view while standing and when seated.
  • Fixed elements are installed in combination side by side to create panoramic views.
  • The fixed window is installed directly below the roof window frame.
  • Ventilation, exterior maintenance and cleaning takes place through the roof window.


Glazing:

- Code 68:

  • Thermal performance (U-value): 1.1 W/m²K.
  • Sound insulation (Rw): 35 dB.
  • Light Transmittance (Tv): 0.71.
  • Total solar energy transmittance (g): 0.52.

- Code 66:

  • Thermal performance (U-value): 1.0 W/m²K.
  • Sound insulation (Rw): 37 dB.
  • Light Transmittance (Tv): 0.71.
  • Total solar energy transmittance (g): 0.52.

- Code 70:

  • Thermal performance (U-value): 1.3 W/m²K.
  • Sound insulation (Rw): 35 dB.
  • Light Transmittance (Tv): 0.68.
  • Total solar energy transmittance (g): 0.46.


Flashings are available in materials and finishes to match roof window cladding.

  • Code EDL + ETL: For standard installation into slate and flat roofing materials up to 8 mm thick. Not suitable for interlocking slate; Roof pitches from 15–90°.
  • Code EDW + ETW: For standard installation into flat and profiled roofing materials up to 120 mm thick, including profiled sheeting and interlocking slates. Roof pitches from 15–90°.
  • Code EDN + ETN: For recessed installation into slate and flat roofing materials up to 8 mm thick. Not suitable for interlocking slate; Roof pitches from 15–90°.
  • Code EDJ + ETJ: For recessed installation into flat and profiled roof materials up to 90 mm thick, including profiled sheeting and interlocking slates; Roof pitches from 20–90°.
  • Code ZWC: Window profile set to be used in conjunction with on-site weathering for non-standard roofing materials. For further details please contact VELUX.

General information

Color

White

Guidance for specification option:

External Colour NCS S-7500-N; Internal Colour, white polyurethane NCS S 0500-N

Finish

-

Manufacturer guidance

Internal frame and sash is in a white polyurethane – Code 0 around a timber core, external cladding in grey aluminium; colour reference NCS S-7500-N - Code 0, Untreated copper – Code 1, Titanium zinc – Code 3, Painted aluminium – Code 8.

Material

Timber

Guidance for specification option:

Timber core

Polyurethane

Guidance for specification option:

Polyurethane coated frames

Aluminium

Guidance for specification option:

Aluminium cladding

Size

-

Manufacturer guidance

Wide range of sizes to suit project requirements

Width

780 mm

942 mm

1140 mm

1340 mm

Height

978 mm

1178 mm

1398 mm

1600 mm

920 mm

Warranty description

Ten year

Guidance for specification option:

For window and pane

Three year

Guidance for specification option:

For electrical items and blinds

Uniclass

Pr_30_59_98_72 Rigid polyurethane frame roof window unitsPrimary

CAWS

L10/480 Roof windows

Product range

Roof window with fixed element installation

Specification data - Rigid polyurethane frame roof window units

Product performance

-

Whole window U-value

1.0–1.3 W/m²K.

Guidance for specification option:

Depending on product option.

Glazing or infill

-

Composition

Argon filled cavity or Krypton filled cavity.

Hardware

Flashings are available in materials and finishes to match roof window cladding.

Operation

-

Type

Manually operated.

Fixing features

Insulation collar, underfelt collar and vapour barrier collar available for installation.

Accessories

None.

Locking handle.

Guidance for specification option:

code 028323

Execution

Fixing of plastics frames.

Internal frame and sash

White polyurethane.

Guidance for specification option:

Code 0

External cladding

Grey aluminium; colour reference NCS S-7500-N.

Guidance for specification option:

Code 0

Untreated copper.

Guidance for specification option:

Code 1

Titanium zinc.

Guidance for specification option:

Code 3

Painted aluminium.

Guidance for specification option:

Code 8

Fixed lower window code

GIU MK34.

Guidance for specification option:

Standard size 780 mm wide x 920 mm high; effective daylight area 0.44 m².

GIU PK34.

Guidance for specification option:

Standard size 942 mm wide x 920 mm high; effective daylight area 0.56 m².

GIU SK34.

Guidance for specification option:

Non-standard size 1140 mm wide x 920 mm high; effective daylight area 0.70 m².

GIU UK34.

Guidance for specification option:

Non-standard size 1340 mm wide x 920 mm high; effective daylight area 0.85 m².

Roof window code

GPU MK04.

Guidance for specification option:

Standard size 780 mm wide x 978 mm high, effective daylight area 0.47 m².

GPU MK06.

Guidance for specification option:

Standard size 780 mm wide x 1178 mm high, effective daylight area 0.59 m².

GPU MK08.

Guidance for specification option:

Standard size 780mm wide x 1398 mm high, effective daylight area 0.72 m².

GPU PK08.

Guidance for specification option:

Standard size 942 mm wide x 1398 mm high, effective daylight area 0.92 m².

GPU PK10.

Guidance for specification option:

Standard size 942 mm wide x 1600 mm high, effective daylight area 1.07 m².

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Glazing

68.

Guidance for specification option:

6.8 mm laminated inner pane with low-e coating; 12 mm Argon filled cavity; 3 mm heat strengthened mid pane with low-e coating; 12 mm Argon filled cavity; 4 mm toughened outer pane with easy to clean and low-e coatings.

66.

Guidance for specification option:

6.8 mm laminated inner pane with low-e coating; 12 mm Krypton filled cavity; 3 mm heat strengthened mid pane with low-e coating; 12 mm Krypton filled cavity; 4 mm toughened outer pane with easy to clean and anti-dew coatings.

70.

Guidance for specification option:

6.8 mm laminated inner pane with low-e coating; 15 mm Argon filled cavity; 4 mm toughened outer pane.

Upper roof window

Blackout blind – Code DKL.

Blackout energy blind – Code FHC.

Duo blackout blind – Code DFD.

Flying pleated blind – Code FHL.

Roller blind – Code RFL.

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Lower fixed window

Not required.

Blackout blind – Code DKL.

Blackout energy blind – Code FHC.

Duo blackout blind – Code DFD.

Flying pleated blind – Code FHL.

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Energy efficient installation

Insulation Collar – Code BDX 2000.

Guidance for specification option:

Not compatible with E*N and E*J flashings. Includes BFX.

Underfelt Collar – Code BFX 1000.

Guidance for specification option:

Not compatible with EDN flashings.

Vapour Barrier Collar – Code BBX 0000.

Flashings

EDL + ETL.

Guidance for specification option:

For standard installation into slate up to 8 mm thick; root pitch 15–90°

EDW + ETW.

Guidance for specification option:

For standard installation into tiles up to 120 mm in profile; roof pitch 15–90°. Also for interlocking slate, thatch and profile sheeting.

EDN + ETN.

Guidance for specification option:

For recessed installation into slate up to 8 mm thick; root pitch 20–90°.

EDJ + ETJ.

Guidance for specification option:

For recessed installation into tile up to 120 mm thick; root pitch 20–90°.

ZWC.

Guidance for specification option:

For standard installation where an on-site flashing is required; roof pitch 15–90°.

Sustainability data

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

2.7 kg·CO₂e/kg

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