How Glass Thickness Affects Safety, Strength & Price
Choosing the right thickness is key to safety, durability, and budget. Use this quick guide to match thickness with use case—so you don’t overpay or under-spec.
Right Thickness
Smart Pricing
Common Glass Thickness Options
4 mm
Light use only (e.g., picture frames).
6 mm
Entry-level shelves, small panels, splashbacks.
8 mm
Shower screens, partitions, medium-duty shelves.
10 mm
Large shelves, stronger partitions, tabletops.
12 mm
Heavy-duty tables, big doors, balustrades*
15–19 mm
Commercial/architectural panels and long spans.
*For safety-critical uses (e.g., balustrades), specify the correct toughened/laminated make-up according to regulations.
How Thickness Changes Safety, Strength & Cost
Safety
Thicker glass is harder to break accidentally. Use toughened/laminated for doors, showers, balustrades, and any safety glazing.
Strength
Greater thickness increases load capacity and span, reducing flex and improving impact resistance.
Price
Cost rises with thickness (more material + handling). Jumping from 6 mm → 10 mm can add ~30–40% depending on size and processing.
Finish & Feel
Thicker glass looks more substantial. For premium tabletops/shelves, 10–12 mm delivers a solid, high-end feel.
Quick Guide: Pick the Right Thickness
| Use Case | Recommended Thickness | Notes |
|---|---|---|
| Glass Shelves | 6–10 mm | Match thickness to span & load. Toughened recommended. |
| Shower Screens | 8–10 mm | Always toughened; consider 10 mm for larger panels. |
| Table Tops | 10–12 mm | Go 12 mm for big tables or heavy use; edge polish for safety. |
| Balustrades | 12 mm+ laminated | Safety-critical: confirm make-up to BS/EN and local regs. |
| Large Panels / Partitions | 12–19 mm | Choose by height/span; seek professional advice for fixings. |
Before You Order
- Confirm the use case (shelves, shower, tabletop, balustrade).
- Match thickness to span & load; thicker for wider spans/heavier loads.
- Specify toughened/laminated where safety glazing is required.
- Choose edge finish (flat-polish/safety) for exposed edges.
- Ask for BS/EN compliance for peace of mind.
All products supplied by Glass Help Ltd are made to order and adhere to the relevant BS/EN standards where applicable.
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