Laminated vs Toughened Glass: How to Choose

Laminated and toughened (tempered) glass are the two most common types of safety glass, and projects are often specified to one, the other, or both. They are not interchangeable: they are made differently and, crucially, they break differently. Choosing the right one comes down to what should happen when the glass is broken.

Toughened glass — strength and safe fragmentation

Toughened glass is flat glass that has been heat-treated so its surface is in compression. The result is a pane 3–5× stronger than ordinary annealed float glass (surface compression ≥ 69 MPa) that, when it does break, shatters into small, blunt granules instead of long sharp shards.

That safe break pattern is its defining safety feature — but the fragments fall out of the opening. Toughened glass is the workhorse for doors, shower screens, partitions, balustrades and façades where impact strength and safe fragmentation are what matters.

Laminated glass — retention on breakage

Laminated glass bonds two or more glass plies together with an interlayer — PVB, SGP, EVA, a decorative film or wire mesh. If the glass breaks, the fragments stay bonded to the interlayer and the pane stays in its frame rather than falling through.

This “retention” behaviour is why laminated glass is specified for overhead glazing, glass walkways, balustrades, underwater viewing and bank/security glazing — anywhere fall-through or hold-in-place is the priority. The interlayer also adds acoustic damping and blocks UV.

Side-by-side

	Toughened	Laminated
Safety principle	Breaks into blunt granules	Holds fragments on the interlayer
On breakage	Falls out of the opening	Stays in the opening
Typical use	Doors, shower screens, partitions, façades	Overhead glazing, balustrades, walkways, security
Thickness	3–25 mm	single ply 3–25 mm (plus interlayer)
Max size	2850 × 6000 mm	2850 × 6000 mm
Standards	GB 15763.2, EN 12150, ASTM C1048, AS/NZS 2208	EN 14449, ASTM C1172, AS/NZS 2208, GB 15763.3

You can have both

The two are not mutually exclusive. Toughened laminated glass pairs the strength and safe fragmentation of toughening with the retention of lamination — the usual choice for structural balustrades and overhead glazing that must be both strong and held in place after breakage.

Tell us the application, span and whether fall-through must be prevented, and we will advise toughened, laminated or toughened-laminated and supply to your standard. Send us your enquiry for a quote, EXW or FOB — or browse our toughened and laminated glass ranges.

Sources

Client product catalogue / knowledge base (flat-tempered and laminated glass specs, interlayer options, break behaviour, applications and standards)