VELUX Replacement glass, here you can order replacement glass for your VELUX windows to be delivered in 6 working days (UK only), or we can quote instantly for replacing it for you by our team of skilled VELUX trained technicians.

We cover England, Wales and Scotland. Highlands, Islands and Congestion Zones are subject to additional costs.

Glass comes with butyl sealant, instructions and a 10 year guarantee. Please note glass units over 1metre will require two people to lift the sash out, upgraded glass can weigh up to 60kg, combined with the sash makes this extremely heavy!

Click here for the glass Installation instructions

For visible glass dimensions click here Glass Guide

Please scroll down to find the correct code. Note a GGL M04 is different to a GGL 4, you will find the single numbers at the bottom of the list. The size in brackets is external frame size not glass size.


Step 1: Glass Options - tell us about your windows

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Window size Please select...
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Step 2: Installation Options - if you'd like, we can also install them for you

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Please use the sliding bar to scroll down ↓Choose window type

GGL
GGU
GHL
GHU
GPL
GPU

How do I find which Window Type I have?

VELUX Type Signs (Data plate) explained

Every VELUX roof window carries a unique Type Sign that details the type and size of the window. In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.

Type Signs differ in appearance depending on the model of your VELUX window. Please identify and select the version of Type Sign on your window from the illustrations below:


Step 1 - Locating the type sign.

In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.

Locating the Velux Type Sign


Step 2 - Finding the codes.

Depending on the year your window was produced you'll find one of the type signs listed below.


Roof Windows delivered after 01 April 2001 can be recognised by a grey coloured type sign with the type being three letters (e.g. GGL) and a size code made up of one letter combined with two numbers (e.g. GGL-M08)
Find code in pre 1991 windows

Roof Windows delivered from 01 April 1991 to 01 April 2001 can be recognised by a golden type sign with the type being three letters (e.g. GGL) and a size code made up of three numbers (e.g. GGL 308)

Roof Windows delivered before 01 April 1991 can be recognised by a silver sign with the type being three letters (e.g. GHL) and size code made up of a numbers 1 - 14 (e.g. GHL 2)

Please use the sliding bar to scroll down ↓Choose window size code

How do I find which Window Size I have?

VELUX Type Signs (Data plate) explained

Every VELUX roof window carries a unique Type Sign that details the type and size of the window. In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.

Type Signs differ in appearance depending on the model of your VELUX window. Please identify and select the version of Type Sign on your window from the illustrations below:


Step 1 - Locating the type sign.

In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.

Locating the Velux Type Sign


Step 2 - Finding the codes.

Depending on the year your window was produced you'll find one of the type signs listed below.


Roof Windows delivered after 01 April 2001 can be recognised by a grey coloured type sign with the type being three letters (e.g. GGL) and a size code made up of one letter combined with two numbers (e.g. GGL-M08)
Find code in pre 1991 windows

Roof Windows delivered from 01 April 1991 to 01 April 2001 can be recognised by a golden type sign with the type being three letters (e.g. GGL) and a size code made up of three numbers (e.g. GGL 308)

Roof Windows delivered before 01 April 1991 can be recognised by a silver sign with the type being three letters (e.g. GHL) and size code made up of a numbers 1 - 14 (e.g. GHL 2)

Choose glazing options

Glazing options

VELUX glazing provides heat insulation, sound insulation, added strength and safety – and protection from the elements. We offer a full range of glazing types to suit your particular needs. All VELUX glass units are AA fire rated. We recommend using laminated panes on all windows above head height. The inner glass in a laminated pane consists of two layers of ordinary float glass with a layer of plastic foil between. If the glass shatters, the shards are retained by the foil.

Eco-Lite Glass

Eco-Lite Glass

*Note: This is not available for delivery, installation by Loft Solutions only. Made up of 4mm K-Glass low-E inner, with 4mm low iron external, these units have thicker glass than the genuine Velux units which use 3mm. U-Value 1.6W/m²K.

THERMO STAR 16mm

THERMO STAR 16mm

Original thickness. Standard 59C Pane. U-value 1.7 W/m²K. (the smaller the value, the better the insulation.) This standard 16mm glazing unit comes with a toughened outer pane. In winter, it reflects 60% of the heat normally lost through glass, back into the room. During the summer, it works in reverse by reflecting excessive heat from the sun to help prevent the room from overheating.

THERMO STAR 24mm

THERMO STAR 24mm

Standard 59 Pane. U-value 1.1 W/m²K. (the smaller the value, the better the insulation.) This standard 24mm glazing unit comes with a toughened outer pane. In winter, it reflects 60% of the heat normally lost through glass, back into the room. During the summer, it works in reverse by reflecting excessive heat from the sun to help prevent the room from overheating. When ordering an upgrade from a pre-2001 window with a 16mm pane we will include the conversion kit to allow the 24mm glass unit to be installed.

PROTEC STAR

PROTEC STAR

73 Pane. U-value 1.1 W/m²K. An improved version of our Standard 59 Glass unit, this glazing comes with a toughened outer and laminated inner pane. This makes it ideal for windows that are positioned above head height. As well as giving you extra protection against breakage, it has improved noise reduction, compared with the 59 standard Pane. It also comes with our clean and clear coating, which helps the window stay cleaner for longer. Ideal for high-level applications, which are hard to access for cleaning. When ordering an upgrade from a pre-2001 window with a 16mm pane we will include the conversion kit to allow the 24mm glass unit to be installed.

70 Pane

70 Pane

70 Pane - Laminated Safety glazing as standard. In case of breakage this prevents glass falling in to the room. U-value 1.3 W/m²K.

60 Pane

60 Pane

60 Pane - Noise reduction glazing. All the benefits of 70 pane, plus reduces traffic and other outside noise, including the sound of rain and hail. Easy-to-clean coating that repels dust and debris. U-value 1.0 W/m²K.

66 Pane

66 Pane

66 Pane. Triple glazed glass unit with all the benefits of our 60 Pane (except rain noise reduction) plus enhanced energy efficiency and anti-dew coating. U-value 1.0 W/m²K.

62 Pane

62 Pane

62 Pane. Triple glazed glass unit with all the benefits of our 60 Pane further enhanced noise reduction plus enhanced energy efficiency and anti-dew coating. U-value 0.9 W/m²K.

OBSCURE

OBSCURE

34 Obscure Pane. U-value 1.1 W/m²K. Combines standard glazing with the inner pane obscured (Frosted). This makes it ideal for bathrooms as it provides privacy without reducing the amount of natural light. When ordering an upgrade from a pre-2001 window with a 16mm pane we will include the conversion kit to allow the 24mm glass unit to be installed.

Installation options

Yes pleaseI would like Loft Solutions to install my glass (+£59.87 per window)
No thanksI only want the glass, I will take care of installation myself

What you need to know

Please note: We charge a travel and mileage for installations, this is calculated when completing the quote page or on checkout once you have registered. Additional costs for installations within the Congestion zone and for parking where permits are not supplied.

Installation can usually be done by removing the sash, we require the area beneath the window to be clear and our expert engineers will have the installation complete in 30-45 minutes depending on size. Glass units are guaranteed for 10 years.

Servicing your windows

Yes pleaseYes, please service my window (+£28.35 per window)
No thanksNo thanks

Do your windows need a service?

The ventilation/opening bar on older VELUX windows usually requires the foam seal to be replaced, the deteriorated and usually crumbling foam can let a lot of heat out and draughts in, we also replace the vent casing filter and grease and tighten the hinges and locking mechanisms. these parts can be found in the maintenance kit ZZZ 220 (included in the price).

Ladder Access Options

YesI do need a ladder to access the window from inside (+£40.80 per window)
NoThe window can be accessed from inside WITHOUT a ladder

Ladder access

Select Yes if the height from the floor to the top of the window is over 3 meters. For Installations over 6 meters additional costs for a tower or external scaffolding may apply.

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VELUX Replacement Glass
VELUX Replacement Glass

If you would like a quote, please continue here, we will need your postcode to calculate a travel charge, this is based on the distance from ourselves, we are a specialist in this field and our VELUX trained engineers have over 20 years experience in VELUX Installations.