Answers to common questions about replacing window glass. If your question isn't covered here, get in touch or request a free quote.
Replacing glass
Can I replace just the glass instead of the whole window?
In many cases, yes. If the frame is in good condition, a misted, cracked or broken pane or sealed unit can usually be replaced on its own. This is typically far less disruptive than replacing the whole window.
Why is my double glazing misty between the panes?
Condensation between the two panes normally means the seal around the unit has failed and moist air has got in. It can't be cleaned from the inside, so the usual fix is to replace the sealed unit. Condensation on the inside or outside surface of the glass is different – it's usually caused by humidity and ventilation rather than a faulty unit.
What is a sealed unit?
A sealed unit (also called an insulated glass unit or IGU) is two or more panes of glass separated by a spacer bar and sealed around the edges. It's the glass part of a double or triple glazed window, and it can usually be replaced without changing the frame.
Can you match my existing glass?
Tell us what you have – the overall unit thickness, whether it's clear, obscure, toughened or laminated, and any pattern – and we'll advise on the closest option. Photos can help; you can mention in your quote request that you have some and we'll let you know how to send them.
Measuring
How do I measure for replacement glass?
Measure the width and height of the glass in millimetres and tell us how many panes you need. Approximate sizes are fine for a quote. Before anything is made, we'll confirm the exact measurements we need and how to take them.
How do I find the thickness of my double glazed unit?
The overall thickness is often printed on the spacer bar between the panes, or you can measure across the edge of the unit if it's accessible. Common overall thicknesses are around 20mm–28mm for standard double glazing. If you're not sure, leave the field blank and tell us about the window.
Glass types and safety
What's the difference between toughened and laminated glass?
Toughened glass is heat-treated so that, if it breaks, it shatters into small, blunter pieces. Laminated glass has a plastic interlayer between panes that holds the glass together if it breaks, which also adds security and can reduce noise.
Do I need safety glass?
Building Regulations require safety glass in certain 'critical locations', such as glazing in and around doors and low-level glazing. The detailed requirements differ between England, Wales, Scotland and Northern Ireland, so tell us where the glass will be fitted and we'll advise what's needed.
What is obscure glass?
Obscure glass is patterned or frosted-effect glass that lets light through while blurring the view. It's popular for bathrooms, front doors and side panels. Different patterns offer different levels of privacy.
Quotes, prices and delivery
How much does replacement glass cost?
It depends on the size, glass type, thickness, number of panes and your delivery or fitting requirements. Send us your details and we'll give you a free written quote.
Is the quote free?
Yes. Requesting a quote is free and there's no obligation to go ahead.
Do you cover my area?
We quote for customers across the UK. Include your postcode in your quote request and we'll confirm the delivery or fitting options for your address.
Can I cancel an order for made-to-measure glass?
Because glass is made to your specification, the usual 14-day cancellation right for online purchases doesn't normally apply once your order has been confirmed. This doesn't affect your rights if glass arrives faulty or doesn't match what was agreed. See our refund policy for details.