Glass Price Calculator guide
Glass Prices in the UK: Cut-to-Size Costs, Types and Safety Rules
How much cut-to-size glass costs in the UK, the difference between float, toughened, laminated and obscure glass, how to measure, and where safety glass is required.
By the AllCalculator editorial teamUpdated 14 October 20265 min read
Whether you're replacing a cracked window pane, adding a glass shelf or ordering a table top, it helps to know what glass should cost and which type you need. Glass is usually priced by area and thickness, but the type of glass, and the safety rules that apply to where it's going, matter just as much.
This guide explains UK glass prices and the main types available. For a quick price and weight estimate, use the glass price calculator.
How glass is priced
Glaziers usually price glass per square metre, based on its type and thickness. Extras such as polished edges, drilled holes, shaped cuts and fitting are added on top. Most glaziers also have a minimum charge per pane, so very small pieces cost more per square metre.
Typical 2026 prices for cut-to-size glass, collected (not fitted), are:
| Glass type | Typical cost per m² |
|---|---|
| 4mm clear float | £35 – £60 |
| 6mm clear float | £50 – £80 |
| 4mm obscure (patterned) | £45 – £75 |
| 4mm toughened | £60 – £95 |
| 6mm toughened | £75 – £120 |
| 6.4mm laminated | £80 – £130 |
| 10mm toughened | £130 – £200 |
Double-glazed sealed units are a different product, priced per unit, and usually cost more.
Working out the area
Glass is measured in millimetres. To find the area in square metres, multiply the width by the height and divide by 1,000,000. For example, a pane 600mm wide and 900mm high is:
600 × 900 ÷ 1,000,000 = 0.54m²
At a typical £77.50 per m² for 4mm toughened glass, that pane would cost about £42, before fitting. The glass price calculator does this for you and handles multiple panes.
The main types of glass
Float glass
Standard, clear "annealed" glass. It's the cheapest option and is used for picture frames, cabinets and windows where safety glass isn't required. When it breaks, it forms sharp, dangerous shards.
Toughened glass
Toughened (tempered) glass is heat-treated to make it around four to five times stronger than float glass of the same thickness. If it does break, it shatters into small, blunt pieces that are much less likely to cause serious injury. It's used in doors, low windows, shower screens, table tops and shelves.
Toughened glass can't be cut, drilled or shaped after toughening. All cutting, holes and edge work must be done before it's toughened, so your measurements must be exact.
Laminated glass
Laminated glass is made of two sheets bonded with a plastic interlayer. If it breaks, the pieces stick to the interlayer rather than falling out. It's used where security or containment matters, such as balustrades, roof glazing and shop fronts. It also reduces noise.
Obscure glass
Patterned or frosted glass that lets light through while blocking clear views. Common in bathrooms and front doors. It's available in float and toughened versions.
Where safety glass is required
Building Regulations (Approved Document K in England) require safety glass in "critical locations" where people are more likely to collide with glazing. In general, this means:
- Any glass in or beside a door, from floor level up to 1,500mm
- Glass in windows and walls from floor level up to 800mm
In these areas, glass must be toughened or laminated to the relevant safety standard. Glass shelves, table tops and shower screens should also be toughened.
How heavy is glass?
Glass weighs about 2.5kg per square metre for every millimetre of thickness. So a 0.54m² pane of 4mm glass weighs around 5.4kg, and a 1m² pane of 10mm glass weighs about 25kg. This matters when choosing shelf brackets, hinges and handling large panes safely. The glass price calculator shows the weight of each pane.
Measuring for replacement glass
- Remove the beading or putty and measure the opening, not the old glass, if possible.
- Measure width and height in millimetres at several points and use the smallest.
- Deduct around 3mm from each side so the glass fits without being forced. Your glazier can advise on the exact allowance for your frame.
- Note the thickness of the existing glass.
- For toughened glass, double-check every measurement: it can't be trimmed later.
Edge finishes and extras
- Arrised (seamed) edges remove the sharpness and are standard for framed glass.
- Polished edges give a smooth, clear finish for exposed edges such as shelves and table tops.
- Holes and cut-outs for hinges or fixings must be specified before toughening.
- Shapes and curves cost more than straight cuts.
Should you fit it yourself?
Small panes in simple frames can be a DIY job if you're confident and use the right safety equipment, including gloves and eye protection. Large panes, overhead glazing, doors and anything in a critical location are best left to a professional glazier, who can also make sure the glass is correctly marked and installed.
Getting the best price
Prices for the same piece of glass can vary noticeably between suppliers, so it's worth getting a few quotes. Give each glazier the exact size, thickness, type and edge finish so you're comparing like with like, and ask whether the price includes VAT, delivery and fitting. Ordering several panes at once can avoid paying the minimum charge more than once. For non-urgent jobs, local glass merchants are often cheaper than emergency glaziers, who typically charge a call-out fee for boarding up and a return visit to fit the new pane.
Frequently asked questions
How can I tell if glass is toughened?
Toughened safety glass should have a permanent kitemark or stamp in one corner showing the standard it meets, such as BS EN 12150.
Is laminated or toughened glass stronger?
Toughened glass is stronger against impact. Laminated glass holds together when broken. Some applications use toughened laminated glass for both benefits.
How long does it take to get toughened glass made?
Usually a few days to a couple of weeks, as the glass must be cut and processed before toughening.
Knowing the type, size and thickness you need makes it much easier to compare prices. Use the glass price calculator to estimate costs and weight before you order.
Sources and further reading
- Approved Document K: protection from falling, collision and impactgov.uk
- Approved Documents (Building Regulations)gov.uk
Links open official and independent websites in a new tab.
This guide is general information to help you understand your options. It isn't financial, tax, legal or building advice and doesn't take your personal circumstances into account. Figures were checked when the guide was last updated and can change, so confirm anything important with GOV.UK, HMRC, a regulated adviser or a qualified tradesperson.