Safety glass
Single-layer safety glasses:
Basic types:
- Tempered ESG
- Heat-strengthened (semi-tempered) TVG
- Painted parapet glass (RAL)
Heat-treated single-layer safety glasses are more flexible and can withstand greater surface loads without breaking but are sensitive to point-concentrated loads, such as those from glass-breaking hammers.
Tempered / ESG glasses
In this type, the glasses undergo a special heat treatment, which transforms their lattice structure and makes them up to 4 times more resistant to external physical impacts than conventional glasses. However, if they do break, they shatter into small granular pieces that are unlikely to cause serious injury.
Heat-strengthened / TVG glasses
For this type of glass, the glasses undergo a special heat treatment similar to tempered glass, but the cooling process is not as rapid as with tempered glasses. The lattice structure is also transformed, making the glass up to 3 times more resistant to external physical impacts than conventional glasses, BUT! after breaking, it does not shatter into granules but instead shows a "V" shape pattern of interlocked fragments.
Multi-layer safety glass:
- Laminated with PVB or EVA film (e.g., 44.1 VSG)
- Laminating with screen-printed or printed glass
- Railing and canopy glasses: laminated from ESG or TVG layers
For this type of glass, one or more layers of glass are bonded together with clear or white film. The films can vary in thickness and are always placed between the glass layers. Laminated glass with film is characterized by its high UV light filtering capacity (even over 95%), thus protecting objects behind it from fading.
For laminated safety glass, we can define two groups according to the type of film used:
- Glass laminated with PVB film: This film is recommended for glass where the "cut edge" is not exposed to direct weather conditions, water, etc. This is mainly typical for insulated glass applications where the glass is placed in a frame.
- Glass laminated with EVA film: With this technology, the glass does not need additional edge protection and can be installed freely.
Fracture patterns of tempered and laminated safety glass
When should you use safety glass?
From the interior, it should be VSG - recommendation:
- Along the floor connection (up to 2.5 m height)
- Full-height glass (fixed and lift-slide)
- In doors (in educational and training institutions, public institutions, high-traffic buildings!)
- Sports facilities (ball-proof glass P2A - 44.2 VSG)
- In case of fall protection requirements (TRAV-DIN18008-4 2013-07)
- Overhead glazing
A fall protection barrier is also required if the fall height from the building exceeds 1.0 meter.
By overhead glazing, we mean glazing with an inclination angle between 0 and 80 degrees. In such cases, for insulating structures, it is necessary to use tempered safety glass for the outer layer and laminated safety glass for the inner layer.
Safety glasses available at CE Glass
| Definition | EN marking | Old DIN marking | Application area | Solution available at CE Glass | Material certificate | MABISZ certificate | Other notes |
|---|---|---|---|---|---|---|---|
| Basic anti-throw protection | P1A | A0 | Shops, residential buildings | Laminated 1-layer PVB CLEAR 4.4 glass structure (Factory material) | Available | x | |
| P2A | A1 | Laminated 2-layer PVB CLEAR 4.4 glass structure (Factory material) | Available | x | |||
| P3A | A2 | Laminated 4-layer PVB CLEAR 4.4 glass structure (Factory material) | Available | x | We recommend this glass for WK2 requirements | ||
| P4A | A3 | Laminated 4-layer PVB CLEAR 4.4 glass structure (Factory material) | Available | x | |||
| P5A | - | Laminated 6-layer PVB CLEAR 4.4 glass structure (Factory material) | Available | x | |||
| Enhanced burglary protection | P6B | B1 | Shops, museums, showcases | Laminated 15mm total thickness EVA CLEAR glass structure (CE Glass custom-made) | x | Available | We recommend this glass for WK3 requirements |
| P7B | B2 | Laminated 17mm total thickness EVA CLEAR glass structure (CE Glass custom-made) | x | Available | |||
| P8B | B3 | Laminated 23mm total thickness EVA CLEAR glass structure (CE Glass custom-made) | x | Available |
Safety glass can of course also be used in insulating glass structures!