GPU Top-Hung Roof Window
Verified by manufacturer 6 months ago
EPD
Certificate type
Manually operated top-hung white polyurethane roof window. Suitable for roof pitches from 15-55°.
Application
Can be installed in roof pitches 15–55° and up to 75° with special springs.
Description
Features and benefits:
- Can be installed in roof pitches 15–55° and up to 75° with special springs.
- Maintenance free polyurethane moulding with white finish on timber core.
- Opens to any positions up to 45° to allow panoramic, uninterrupted views.
- Meets requirements for emergency escape. (except size CK04).
- The window is opened by means of a handle placed at the bottom sash.
- Sash can also be rotated 180° and locks in place for the ease of cleaning of the outer pane.
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 62:
- Thermal performance (U-value): 0.96 W/m²K.
- Sound insulation (Rw): 42 dB.
- Light Transmittance (Tv): 0.73.
- 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.
Energy efficiency installation collars:
- Insulation collar – Code BDX: Optimizes the insulation around window frame by preventing heat loss and eliminating cold bridges. BDX 2000 variant Includes underfelt collar BFX.
- Underfelt collar – Code BFX: Ensures a weathertight seal between the roof window and the roof.
- Vapour barrier collar – Code BBX: Provides vapour control and air permeability seal.
Flashing:
Flashings are available in materials and finishes to match roof window cladding.
- Code EDL: For standard installation into slate and flat roofing materials up to 8 mm thick. Not suitable for interlocking slate.
- Code EDN: For recessed installation into slate and flat roofing materials up to 8 mm thick. Not suitable for interlocking slate.
- Code EDW: For standard installation into flat and profiled roofing materials up to 120 mm thick, including profiled sheeting and interlocking slates.
- Code EDJ: For recessed installation into flat and profiled roofing materials up to 90 mm thick, including profiled sheeting and interlocking slates.
- Code EDP: For standard installation into plain tiles up to 14 mm thick.
- 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 |
Material | Timber Guidance for specification option: Timber core Polyurethane Guidance for specification option: Polyurethane coated frames. Aluminium Guidance for specification option: Aluminium cladding Glass Manufacturer guidancePolyurethane color NCS 0500-N. 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. |
Width | 550 mm 660 mm 780 mm 942 mm 1140 mm |
Height | 978 mm 1178 mm 1398 mm 1600 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 | |
CAWS | L10/480 Roof windows |
Product range |
Specification data - Rigid polyurethane frame roof window units
Standard | BBA Agrément Certificate. |
Product performance | |
Whole window U-value | 0.88–1.3 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.Guidance for specification option: the window is opened by means of a handle placed at the bottom sash. Sash can also be rotated 180° and locks in place for the ease of cleaning of the outer pane |
Fixing features | Insulation collar, underfelt collar and vapour barrier collar available for installation. |
Accessories | Not required.Locking handles.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. |
Roof pitch | Guidance for specification option: Insert requirements. |
Window code | GPU CK04. Guidance for specification option: Standard size 550 mm wide x 978 mm high, effective daylight area 0.29 m². GPU CK06. Guidance for specification option: Standard size 550 mm wide x 1178 mm high, effective daylight area 0.37 m². GPU FK06. Guidance for specification option: Standard size 660 mm wide x 1178 mm high, effective daylight area 0.47 m². 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. |
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. |
Type | Not required. Blackout blind – Code DKL. Blackout energy blind – Code FHC. Duo blackout blind – Code DFD. External awning blind – Code MHL. |
Colour | Not applicable. As schedule. Guidance for specification option: Refer to VELUX Blinds and Shutters brochure for available colours and patterns. |
Operation | Not applicable. Manual. |
Energy efficiency installation collars | Insulation Collar – Code BDX 2000. Guidance for specification option: Not compatible with EDN and EDJ flashings. Includes BFX. Insulation Collar – Code BDX 2000F. Guidance for specification option: Compatible with EDN and EDJ flashings only. Includes BFX. Underfelt Collar – Code BFX 1000. Vapour Barrier Collar – Code BBX 0000. |
Flashings | EDL. Guidance for specification option: For standard installation in slate up to 8 mm thick; roof pitch 15–90°. EDN. Guidance for specification option: For recessed installation in slate up to 8 mm thick; roof pitch 20–90°. EDW. Guidance for specification option: For standard installation in tiles up to 120 mm in profile; roof pitch 15–90°. Also for interlocking slate, thatch and profile sheeting. EDJ. Guidance for specification option: For recessed installation in tile up to 90 mm in profile; roof pitch 20–90°. EDP. Guidance for specification option: For standard installation in plain tiles up to 14 mm thick; roof pitch 25–90°. |
Sustainability data
Contains Red List materials | Yes |
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Timber Guidance for specification option: Timber core Polyurethane Guidance for specification option: Polyurethane coated frames. Aluminium Guidance for specification option: Aluminium cladding Glass Manufacturer guidancePolyurethane color NCS 0500-N. 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. |
Manufacturing plant location | |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 2.7 kg CO₂ eq/unit |
Recyclability | Yes |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 12 % |
Expected Life | 30 year |
Third party certifications
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 4 |
Third party certifications
EPD
EPD 3 Layer
EPD
PUR EDP 2 layer