Laminated Safety Glass

Laminated — Safety & Security

Laminated glass stays intact after breakage — fragments adhere to the interlayer, maintaining a residual barrier. This is why it’s MANDATORY for overhead glazing (inner pane), balustrades, walk-on glass, and any barrier function. DuPont SentryGlas® (SGP) is 5× stronger and 100× stiffer than PVB for structural applications.

See how the interlayer holds the pane together on impact:

Impact Safety

How the Interlayer Holds the Pane Together

Glass PVB interlayer Glass

Two glass plies bonded to a tough polymer interlayer — the bond, not the glass, does the work when a pane is struck.

Ordinary Float

Cracks, then shards tumble away — leaves an open, unguarded gap.

Laminated

Cracks, but holds — glass stays bonded to the interlayer.

Enhanced security Acoustic reduction UV filtering

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Interlayer Comparison

Interlayer	Material	Thickness	Stiffness	UV Block	Key Use
Standard PVB	Polyvinyl butyral	0.38-1.52mm	Standard	99%	Doors, windows, safety
Acoustic PVB	Modified PVB	0.76-1.52mm	Standard	99%	Roads, railways (+3-5 dB)
SentryGlas® SGP	Ionoplast (DuPont)	0.89-2.28mm	100× PVB	99%	Walk-on, balustrades, structural
EVA	Ethylene vinyl acetate	0.38mm+	Standard	95%	Wet areas, decorative

Common Configurations

Designation	Makeup	Thickness	Weight/m²	Rw (dB)	Application
6.4mm Lam	3+0.38+3	6.4mm	16 kg	30	Basic safety
6.8mm Lam	3+0.76+3	6.8mm	16 kg	33	Acoustic, overhead
8.8mm Lam	4+0.76+4	8.8mm	21 kg	34	Balustrades, rooflights
10.8mm Lam	5+0.76+5	10.8mm	26 kg	35	Structural barriers
13.5mm Lam	6+1.52+6	13.5mm	31 kg	37	Walk-on, heavy duty
17.5mm Lam	8+1.52+8	17.5mm	41 kg	39	Heavy structural
21.5mm Lam	10+1.52+10	21.5mm	51 kg	41	Maximum strength

Brand Reference

Laminated vs Toughened — When to Use

Application	Laminated	Toughened	Recommendation
Overhead / roof	MANDATORY (inner)	Outer pane	Lam inner + tough outer
Balustrades	MANDATORY	NOT acceptable alone	Toughened laminated
Walk-on floors	MANDATORY	Sacrificial ply	T+T+Lam SGP multi-ply
Doors	Acceptable	Required	Either — toughened common
Security	Excellent	Shatters, allows entry	Laminated for security
Acoustic	Superior (acoustic PVB)	Standard only	Laminated for noise

Related Products & Glass Types

Common Questions