GPU Electrically Operated Top-Hung Roof Window

Features and benefits:

• Maintenance free polyurethane moulding with white finish on timber core.
• Fully integrated, pre-installed motor.
• Gives a panoramic view and the feeling of space.
• Simple, convenient wall switch to operate the windows.
• Rain sensor closes window automatically in the event of rain.

Glazing:

- Code 6621U:

• 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 7021U:

• 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 the roof window frame by reducing 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 EDJ: For recessed installation into flat and profiled roofing materials up to 90 mm thick, including profiled sheeting and interlocking slates. (Requires ZWP Profile Set, contact VELUX for details).
• 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 (Requires ZWP Profile Set, contact VELUX for details).
• Code EDP: For standard installation into plain tiles up to 14 mm thick.
• Code EDW: For standard installation into flat and profiled roofing materials up to 120 mm thick, including profiled sheeting and interlocking slates.