12mm clear toughened glass, cut to your sizes. A step up from our standard balustrade infill, and specified where the glass is doing more of the work itself.

What 12mm is for

Two main jobs:

• Internal glass doors. The usual thickness — heavy enough to feel solid and to take door hardware.
• Internal domestic balustrades with a handrail. Where the handrail is taking load along the top and the glass is carrying more than it would as a simple framed infill.

Do you actually need 12mm?

Often not, and it is worth checking before you pay for it.

If your balustrade is a framed system — channel, clamps, posts and rails holding the panel — then 10mm is the standard, covers the large majority of jobs, and costs less. That is the single most common thing we cut.

Going the other way, a frameless balustrade with a handrail is usually 15mm, and frameless with no handrail at all is laminated territory rather than simply thicker. Our glass balustrade regulations guide explains why the handrail changes the answer.

Send us the sizes and tell us what is holding the glass, and we will tell you which of the four you need.

Other finishes

Also available frosted in 12mm for doors and screens where you want light without a view through.

Ordering and delivery

Every panel is made to your own dimensions, to the millimetre. We do not hold standard sizes and there is no stock list to pick from — put the length and height you need into the calculator and the price shown is for that exact panel, cut and toughened for your job.

Tell us about any holes, cut-outs, notches or radius corners at the same time. Toughened glass cannot be cut or drilled once it has been through the furnace, so everything has to be done before it is toughened and nothing can be trimmed on site. For anything unusual use our bespoke toughened glass service.

Polished edges and a proper 5mm radius corner as standard on all four corners — not the dubbed corner, knocked off by hand, that a lot of suppliers will quote you. Details on our material and finish standards page. Manufactured to BS EN 12150, impact classified to BS EN 12600.

Nationwide delivery typically 3–4 weeks; check terms for excluded zones. Call 0114 243 9009 or email sales@diometonline.co.uk.

A note on specification

The guidance on this page reflects what we typically supply for jobs of this kind, and is offered in good faith to help you order the right thing. It is not a structural specification and it is not a substitute for project-specific design. Barrier heights, spans, loadings, fixings, substrates and exposure all vary from site to site, and the final specification for your project remains the responsibility of you, your designer, your structural engineer or your building control body. We manufacture and supply to the sizes and specification you give us. If you are unsure, send us the details before ordering and we will tell you what we would normally supply for a job like yours.