Velux Centre Pivot Roof Window - 780 x 1398 - GGL MK08 307021U

The Velux Centre Pivot Roof Window provides natural light and ventilation with a classic design su...

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Travis PerkinsVELUX Electric Centre Pivot Roof Window Lacquered Pine 780mm x 1400mm GGL MK08 307021U
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Product Information

Full details

The Velux Centre Pivot Roof Window (GGL MK08 307021U) is an ideal solution for homeowners and contractors looking to brighten loft conversions or attic spaces with natural light and effective ventilation. This classic centre-pivot design offers a reliable top control bar for easy operation, even when furniture is placed directly beneath the window. While its pine construction provides a timeless look, users should be aware that the wood frame requires occasional maintenance compared to maintenance-free polyurethane alternatives.

All features

Model Part NumberGGL MK08 307021U
BrandVelux

Extended Product Information

FAQs

Can I install this window myself?

While technically possible for experienced DIYers, we highly recommend professional installation to ensure the flashing is sealed correctly and to preserve the product warranty.

Does the window come with flashing?

No, the flashing kit must be purchased separately based on your specific roof material type.

How do I clean the exterior glass?

Pull the top control bar to pivot the window, then rotate it 180 degrees until it locks into the cleaning position, allowing you to wipe the outer pane from inside.

What does the 307021U code represent?

This is the specific model variant code for the standard laminated, clear-lacquered pine centre-pivot window.

Can I add blackout blinds to this window?

Yes, this model is fully compatible with the Velux range of blinds and shutters, which can be easily snapped into the pre-installed mounting brackets.

Troubleshooting

Window is difficult to open or close

Check the friction hinges for debris or obstruction and ensure the window is properly aligned in the frame.

Condensation on the inner pane

Increase ventilation by opening the window for short periods, especially during humid activities like cooking or drying laundry.

Drafts around the frame

Inspect the rubber gaskets for damage and ensure the window is fully latched when closed.

Pros and Cons

Pros

  • Easy access to outer glass for safe cleaning from indoors
  • Top control bar keeps operation clear of furniture
  • Laminated glass ensures superior safety standards
  • High-quality clear lacquer finish offers long-lasting durability

Cons

  • Requires periodic maintenance for the wooden frame
  • Not intended for flat roof applications
  • Professional installation recommended to maintain weather-tight seals

Setup, Compatibility & Care

This window is designed for installation on roof pitches between 15 and 90 degrees. Ensure that you have the appropriate flashing kit for your specific roof material (such as tiles or slate) to guarantee a watertight seal.

Care Instructions:

  • Frame: Wipe the clear-lacquered pine periodically with a soft, damp cloth to remove dust. Re-apply a protective clear lacquer coating every few years if the wood shows signs of drying out.
  • Glass: Use a soft, non-abrasive cloth and mild detergent for the glass.
  • Maintenance: Annually clear the external drainage channel of leaves and debris to ensure rainwater flows away from the window correctly.

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