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VELUX GGL CK04 SD5N2 Conservation Window for 8mm Slate - 55cm x 98cm

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£479.00 Incl. VAT
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VELUX new generation features

More daylight : up to 18% larger pane area.
Slim profile : slim profiles and larger pane means more glass and less frame.

Thermo technology : innovative use of high performance insulation material.
More comfort : a more modern and attractive design with excellent ventilation and operation control.
Control bar : new design of the control bar with functionality icons.
Exterior design : improved exterior finish with a softer and more discrete expression.
Click-on covers : fewer screws with the new click-on covers.
Top cover : slimmer top cover.

Centre pivot conservation roof windows

When planning details that a window of traditional appearance is required, conservation roof windows should be considered. All of our conservation roof windows have the technically superior features of a VELUX roof window in a traditional black conservation style.

  • Black external profiles and glazing bar - RAL colour 9005.
  • Recessed installation for slate roofs.

Lacquered natural pine finish painted white - GGL

  • Pine core painted white.
  • Excellent value for money and easy to install.
  • Made from High quality natural pine.
  • Protective triple coat clear lacquer helps to preserve the timber of the window.
  • Easy to use top control bar for opening and even ventilation purposes when the window is closed.
  • Rotates 180° for easy cleaning.

- - 70 laminated glazing

  • 6.4mm laminated inner pane offers additional safety.
  • Offers improved noise reduction compared to - -34 and - -59 glazing.
  • 4mm toughened outer pane with low-E coating.


  • 10 year guarantee on windows and flashings.
  • Suitable for roof pitches between 20 and 90°.
  • BBA certified.

This is a double glazed white painted centre pivot window with laminated glazing and has a uValue of 1.3.

Please note this conservation window comes with a glazing bar, insulation collar (BDX) an underfelt collar (BFX) and a recessed flashing kit for slate up to 8mm thick (EDN).


Size CK04 - 55 x 98cm Width 550mm


Code GGL Height 980mm Finish White Painted Operation Manual
Glazing Double Glazing

Questions & Answers


Does this come with the flashing kit?


Yes a slate flashing kit


980mm is the height of the window I like. Is it possible it might fit if there is an internal beam limiting the internal space to around 930mm?


Unfortunately not, to fit the window you would need an aperture of at least 980mm high to fit to, then also adding a little extra for adjustment when fitting. If you would like to discuss other options please give us a call on 01752 692760.

Have a question about this product?


3.5 / 5 8 reviews
Reviewing VELUX GGL FK06 SD5N2 Conservation Window for 8mm Slate - 66cm x 118cm
28th June 2021
Velux, what's not to like.
amanda fowler
Reviewing VELUX GGL FK06 SD5N2 Conservation Window for 8mm Slate - 66cm x 118cm
14th November 2020
Arrived complete but not fitted yet so can't give 5 stars.
Mike B
Reviewing VELUX GGL MK06 SD5N2 Conservation Window for 8mm Slate - 78cm x 118cm
26th October 2020
Excellent product. Exactly what you would expect from Velux.
Danny Sullivan
Reviewing VELUX GGL UK04 SD5N2 Conservation Window for 8mm Slate - 134cm x 98cm
11th October 2020
3 windows all faulty due to transport issues - velux feedback
Derek Reid
Reviewing VELUX GGL CK06 SD5N2 Conservation Window for 8mm Slate - 55cm x 118cm
7th October 2020
Instruction sizes completely wrong for Scottish type slating tech department hopeless I had to buy two other sets of flashings elsewhere due to technical advice being wrong. Appalled
Derek Reid
Reviewing VELUX GGL CK04 SD5N2 Conservation Window for 8mm Slate - 55cm x 98cm
7th October 2020
Worst technical info ever given by your tech team appalling.
Reviewing VELUX GGL CK04 SD5N2 Conservation Window for 8mm Slate - 55cm x 98cm
16th July 2020
Well made product! Prompt delivery and packaging
Mrs sian stewart
Reviewing VELUX GGL CK04 SD5N2 Conservation Window for 8mm Slate - 55cm x 98cm
4th May 2020
Received very professional and friendly help when phoned to make my order. Got good information about delivery and arrived very quickly. Many thanks.
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VELUX GGL CK04 SD5N2 Conservation Window for 8mm Slate - 55cm x 98cm

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