Security & Safety Laminated Glass: Supplier Guide

When a glass element has to keep people safe or protect what is behind it, ordinary glazing is not enough. Security and safety applications — bank counters, ground-floor shopfronts, balustrades, public-building facades — need glass that stays in place when it is struck and slows anyone trying to break through. That is the role of security laminated glass: a laminated build-up engineered so the glass holds together and resists penetration rather than falling away. This guide explains, for B2B buyers and specifiers, how laminated construction protects, which build-ups suit which jobs, and what to put in an enquiry so the panels you order match the risk you are designing for.

What security laminated glass is and how it protects

Laminated glass is two or more panes of glass permanently bonded with a tough plastic interlayer under heat and pressure. In a security or safety context, that interlayer is the whole point. When the glass is hit hard enough to crack, the fragments stay bonded to the interlayer instead of flying out or collapsing — the panel keeps its shape and remains a barrier even after it is damaged.

That behaviour gives laminated construction two qualities security glazing depends on. First, safety on failure: broken glass is held in the frame rather than falling, which is why laminated safety glass is specified for overhead glazing, balustrades and anywhere a fall or spray of shards would injure people. Second, resistance to penetration: a would-be intruder has to get through the glass and tear through a tough, elastic interlayer that resists cutting and impact, which turns a quick break-in into a slow, noisy, repeated effort — exactly the deterrent a security glazing design is after.

A key principle for specifiers: resistance scales with the build-up. Thicker glass plies and a stronger or thicker interlayer — or several interlayers in a multi-ply laminate — increase a panel’s resistance to impact and forced entry. There is no single “security glass”; there is a spectrum of laminated build-ups, and the right one depends on the threat and the location.

Interlayer and build-up choices

The interlayer does most of the security work, so the choice between interlayer types matters as much as the glass itself. Dayang supplies laminated glass with PVB, SGP and EVA interlayers, and the first two are the ones that come up most in security and safety work.

• PVB (polyvinyl butyral) is the standard architectural interlayer. It is tough, elastic and well proven for safety glazing — it holds fragments, absorbs impact energy and is widely specified for facades, balustrades and overhead glass.
• SGP (ionoplast) is a stiffer, stronger interlayer. It bonds the plies more rigidly, holds broken glass more firmly and gives a laminate greater residual strength and edge stability after breakage — useful where a damaged panel must keep carrying load or resisting force, such as structural balustrades and higher-security glazing.
• Multi-ply build-ups combine more glass layers and more interlayers. Stacking plies and interlayers is how a laminate is made progressively harder to penetrate, which is the route to forced-entry-resistant glazing for demanding locations.

For a fuller comparison of these two interlayers, see PVB vs SGP laminated glass; for how laminated compares with toughened glass, see laminated vs toughened glass. The practical takeaway for buyers is that interlayer type and build-up are specification levers: you tune the glass thickness, the interlayer, and the number of plies to the level of protection the project needs.

Where it is used

Security and safety laminated glass turns up across the built environment wherever glazing has to do more than let light in:

• Banks and secure counters. Laminated glass is the basis of bank security windows and teller screens, where forced-entry resistance and fragment retention protect staff and cash handling. (Specified qualitatively here for security — not to any ballistic or blast rating.)
• Balustrades and barriers. Stair, balcony and atrium balustrades must stay in place if struck or leaned on; laminated glass keeps a broken panel intact so it continues to act as a guard.
• Ground-floor facades and shopfronts. Street-level glazing is the most exposed to impact and attempted entry, so laminated build-ups add both safety and a forced-entry deterrent.
• Public buildings and landmarks. Offices, transport hubs, landmark facades, glass walkways and even underwater viewing tunnels use laminated glass where failure has to be safe and the panel has to stay whole.

In each case the laminate is chosen for the job — a balustrade and a bank counter are both laminated glass, but their build-ups are specified differently.

What to specify when ordering

Because security laminated glass is made to order, an accurate quote and the right panel both depend on the detail you provide. When you send an enquiry, include:

1. Application and the risk it addresses — balustrade, facade, bank counter, walkway — so the build-up suits the duty.
2. Panel sizes and quantity. Dayang produces large-format, made-to-order sizes; share your exact dimensions rather than assuming a standard.
3. Glass thickness and build-up. Single panes run 3–25mm; for a laminate, state the ply thicknesses or the protection level you need and we will propose a build-up.
4. Interlayer preference — PVB, SGP or a multi-ply construction — or tell us the duty and we will recommend one.
5. Edgework, holes and fixings, plus whether the glass goes into an insulating unit, so the finished panel arrives ready to install.
6. Destination and shipping terms (EXW or FOB) for a delivered price.

Dayang manufactures laminated glass to recognised safety-glazing standards including AS/NZS 2208, ASTM C1172-14, EN 14449:2005 and GB 15763.3. The more precisely you describe the application, the better the build-up we can specify.

FAQ

Is security laminated glass bulletproof? We supply security and safety laminated glass for forced-entry-resistant and bank-security applications, specified qualitatively. We do not state ballistic or blast ratings; the right framing is security laminated glass matched to a defined duty, not a “bulletproof” claim to any class.

What makes laminated glass more secure than toughened glass? The interlayer. Toughened glass breaks into small fragments and clears the opening, whereas laminated glass holds its fragments on the interlayer, so the panel stays in place and keeps resisting impact and penetration after it cracks.

PVB or SGP for a security application? PVB is the proven general safety interlayer; SGP is stiffer and gives greater residual strength and edge stability after breakage, which suits structural balustrades and higher-security glazing. State the duty and we will recommend the interlayer.

How thick should security laminated glass be? It depends on the application and the level of resistance required. Single panes range 3–25mm, and laminates combine plies and interlayers; resistance increases with thicker glass and stronger or multiple interlayers, so the build-up is specified to the job.

What sizes can you make? Dayang produces large-format, made-to-order panels. Send your exact dimensions with your enquiry and we will confirm what suits the build-up.

Ready to specify a project? Send us your enquiry with the application, sizes and quantity, and we will propose a laminated build-up and quote EXW or FOB.