10 Important Facts about Laminated Safety Glass

By March 1, 2020Blog

Security concerns resulting from active shootings in educational centers and places of worship have made most commercial building owners and homeowners to increasingly move away from standard glass windows. There is an increasing need for stronger glass to keep attackers and intruders at bay. Security glass products like laminated safety glass are effective at delaying such forced entries and attacks as well.

With the invention of laminated glass windows, Riot Glass continues to provide security solutions by making windows and doors less penetrable. Before installing or retrofitting their windows and doors, homeowners and commercial building owners need to get some facts about laminated safety glass right. Read on to find out some of those facts.

1. Laminated safety glass consists of layers

Unlike the standard glass for windows and doors, this one is made of two glass layers and an interlayer. The two layers of glass are hardened, mainly through heat strengthening. They are then bonded by the interlayer, which is usually a vinyl material, to keep the two layers intact.

The construction of safety laminated glass is what makes it different from the standard window and door glass. Further, this construction helps prevent forced entry, which makes the glass to be dubbed “safety glass.”

2. Laminated glass does not shatter

When impacted, this safety glass does not shatter and fall off the window or door frame; the vinyl interlayer holds the glass fragments. As such, it does not pose an injury threat to building occupants, which result from flying glass pieces in the case of the standard window and door glass.

Laminated glass is, therefore, effective at blocking the entry of attackers and intruders into homes, stores, or classrooms since it remains in place even after the attempt to shatter it. This feature allows building occupants time to react as well as security officers to arrive.

3. Laminated Glass is not Bulletproof

While some people may mistake laminated glass for bulletproof glass, it is important to note that it falls into the category of non-ballistic glazing products. This means it doesn’t stop a bullet from penetrating, but it will maintain its structure after a bullet impact.

Laminated glass does not, therefore, keep bullets away, but still holds together upon bullet penetration. This is important as it delays the attacker and buys occupants precious time to find cover and authorities to arrive at the place. Unlike the standard glass, it provides a safety barrier against flying pieces of glass that may cause injuries to room occupants.

4. It is virtually invisible

Laminated glass does a great job of keeping you away from intruders and attackers while maintaining crystal clear views of the surroundings. In the design of laminated glass, the interlayer has minimal effect on the view, and building occupants can still enjoy clear views of their surroundings.

The common type of material used as the interlayer makes laminated safety glass panels virtually invisible. This, therefore, makes it useful for schools, homes, and particularly stores, which makes it possible for potential customers to window-shop while maintaining the safety of the valuables inside.

5. 100X stiffer, 5X stronger

Laminated glass is categorized as containment-grade glazing materials, which means it is reinforced with a more robust interlayer. The strength of this safety glass also goes down to the number of glass layers used. It also goes through a hardening process where heat is used to make the glass sturdier.

The thickness of the glass, therefore, comes in handy in determining its protection level. The thickness can vary from 0.60 to 0.90+ mm, depending on the glazing pocket or user preference. The use of stronger interlayer materials, other than the standard polyvinyl butyral (PVB), makes laminated glass stronger and stiffer compared to standard glass and other types of safety glass.

6. Safety glass can be used for new installations or retrofitting

Glass companies have long used laminated glass for windows and doors in new buildings. These may be homes where owners wish to take security measures like preventing forced entry. Jewel store owners also prefer the installation of laminated glass for the door and windows to safeguard their valuables.

This glass can also be retrofitted into almost any existing door and window systems. The existing standard glass is removed and replaced with the laminated glass. It can even be retrofitted into most existing frames, apart from the old and damaged framings.

7. Laminated glass is a great second layer of defense

While typical applications of this glass include door and window systems, it also comes in handy as a second layer of defense. It can be fitted into interior locations like conference rooms, sidelights, and doors.

Laminated glass can also be used for entry doors from a vestibule into the main area of a building. For this application, however, this glass should not be fitted into weak framings or old-school framings like casement frames.

8. Laminated glass is more expensive than standard and tempered glass

It is specially manufactured for bolstering security and preventing forced entry. Laminated safety glass cost is, therefore, higher than other glass types used for door and window systems, including the standard and tempered glass types. Whenever you are planning to install or retrofit your doors and windows with this glass, be ready to dig a little deeper into your pocket.

9. Laminated glass has soundproofing properties

While this may not be the primary reason for the invention and use of laminated glass, it is well worth noting. The vinyl interlayer used in the manufacture of laminated glass can absorb sound up to some level, which helps prevents noise into homes and interior rooms such as conference rooms.

10. Laminated glass provides some level of UV-resistance

This property may not be obvious, mainly because laminated glass does not distort views of the surrounding. Depending on the thickness of the glass and interlayer material, the amount of UV light that penetrates the glass may vary. This way, laminated glass does enough to provide UV-resistance.


Laminated safety glass is an essential containment-grade glazing product that comes in handy in preventing forced entry. When used on doors and window systems for schools, homes, and stores, it does well in delaying forced entry, giving time for room occupants to react, and security officials to arrive.