Request a quote
Project planners


RANGE VIT PROTECT | OURS laminated glazing


Laminated glass has two functions: in the event of breakage, the glazing must not cause injury and must remain in place.

Laminated glass is made by assembling two or more sheets of float glass (clear, coloured, etc.), which are bonded together with plastic films (PVB or Evasafe) to form a strong, resistant barrier that holds the glass in place after it has been broken. STOP CHOC laminated glazing is a composite material made up of layers of glass and film.
The thickness of a standard PVB film is 0.38 mm and that of an Evasafe film is 0.40 mm. Combined with the accumulation of different layers of float, the glazing is ultimately thicker than standard float glass and is therefore more resistant to impact. STOP CHOC glazing is therefore useful for applications where standards and technical requirements are important!

Une nouvelle gamme est disponible chez VIT : VIT PROTECT OUR LAMINATED GLASS !

Technical specifications

Understanding the names of laminated glass :

The names of laminated glass are generally composed as follows: XXY or XX.Y or XX/Y.

"XX" means that the glass is made up of two float glass panes of "X" mm thickness.

‘’Y" refers to the number of films integrated into the laminate..

For example, a non-symmetrical laminated glass composed of a 4 mm glass, a 6 mm glass and two plastic films would be called 46², or 46.2 or 46/2.

How is STOP CHOC glazing made?

Thanks to its layered construction, STOP CHOC glazing offers high impact resistance while preventing dangerous glass breakage. This glazing acts as a burglar-deterrent barrier.

Laminated glazing can also be made from toughened glass, i.e. the glass has undergone a heat treatment that greatly increases its resistance to mechanical stress (impact, etc.) and thermal stress (too great a temperature difference). This resistance means that it can be considered a safety product in many applications, such as railings.

Laminated glass can also be used in many different ways. Laminated glass can be made into opal laminated glass, which guarantees privacy while still letting light through. Decorative laminated glass, to add originality to interiors with digital printing or decorative inserts from the VIT Design range. There's also STOP CHOC PLUSSTOP CHOC PLUS page for more information.

STOP CHOC glazing: safety glass, subject to various regulations.

As STOP CHOClaminated glazing is a safety glass (protecting property or people), it is subject to various regulations and performance classes.
  • Classification of security products: NF EN 12600 ;
  • Resistance to vandalism/break-in: NF EN 356 ;
Classe EN 12 600
Pendulum test
Classe EN 356
Falling balls
Degree of protection Test
drop height
Performance Example of
1B1 P1 A Protection against
unorganised vandalism
1,5 m (3 billes) No penetration 33.2 6,8 mm
1B1 P2 A Protection against
unorganised vandalism
3 m (3 billes) No penetration 44.2 8,8 mm
1B1 P3 A unorganised vandalism 6 m (3 billes) No penetration 44.3 9 mm
1B1 P4 A Protection against
9 m (3 billes) No penetration 44.4 9,5 mm
1B1 P5 A - reinforced
Protection against
9 m (3 billes) No penetration 44.6 (SP510) 10,3 mm

Understanding the classification of laminated glazing:

Standard EN 12600 defines safety levels and the behaviour of glazing in the event of breakage, based on a pendulum test (double tyre test simulating the fall of a 50 kg mass on samples measuring 1938 mm x 876 mm). This classification is expressed as a function of :
  • The level of stress to which the sample was subjected: - 1 for a drop of 1200 mm - 2 for 450 mm - 3 for 190 mm
  • The mode of failure. It is expressed from A to C (annealed glass A), (laminated glass B), (toughened glass C).
  • The maximum stress level at which the product significantly resisted (without allowing a 76 mm sphere to pass and without projecting large glass fragments). This level is expressed from 0 to 3
1B1 glazing is therefore laminated glass where the sample has been subjected to a 1200mm drop and has withstood level 1 stress.

Standard EN 356 classifies glazing according to its resistance to attacks, thrown objects or attempted break-ins.
  • Vandal-resistant glazing, classes P1A to P5A (a 4.1 kg ball dropped from a height of 1.50 m to 9 m),
  • Break-in-resistant glazing, classes P6B to P8B (hammer and axe attacks).
Don't hesitate to take a look at the STOP CHOC PLUS range, burglar-resistant glazing. Standard EN 356 defines the ability of glazing to withstand objects thrown at it.

Basic composition in annealed glass to NF EN 572-2

Reference: NF EN ISO 12543-2 (nominal thickness in mm)




Maximum surface area in square metres (m²) 0,50 2,00 4,50 6,00
- rebate pf all around and seals;

- minimum rebate height pf = 15 mm

- the profiles forming the rebate meet the requirements of paragraph 8.3 of NF DTU 39 P1-1: The profiles forming the
   sufficient rigidity to justify a deformation of less than or equal to 1/300th of their length under
   under 800 Pa, applied to the infill element;

- for glazed walls, the top rail, where it is located within the height of protection, must be validated under a
   M50/900J impact test, in accordance with P 08-302

VIT STOP CHOC glazing for use in guardrails

VIT STOP CHOC glazing can of course be used as a guardrail to prevent people from falling into a void. Numerous solutions exist, with 4-sided rebate or other (top and bottom rebate, by clamps, etc.) In all cases a PV or a test is required to justify the guardrail function of the assembly.
In the case of guardrails with rabbeting on 4 sides, the compositions below are recognised as satisfactory according to DTU 39, in the maintenance conditions indicated (rabbeting height, glazing surface, etc.): For any other installation system (rabbeted on 2 sides, by clamps, etc.) a PV or a test is required. If the guard-rail glazing is fitted as insulating glazing, the recommendations for the direction of installation in DTU 39 must be complied with:

Insulating glass units
Impact resistant glazing
Annealed Hardened Toughened

1C3, 1C2

ou other
1B1 and P1A
on the side
of the impact
Annealed NO NO YES a) b) NO NO YES NO
Hardened NO NO YES a) b) NO NO YES NO
Toughened 1C1 YES a) b) c) YES a) b) c) YES a) d) e) YES a) d) e) YES a) b) c) YES YES a) b)
Toughened 1C3,
1C2 ou NPD
1B1 ou Autre
1B et P1A
YES c) YES c) YES e) YES e) YES c) YES YES
Laminated other NO NO YES a) b) NO NO YES NO
a) With residual protection according to NF P 01-012:1988.

b)Justification of the non-breakage of the component classified 1C1.

c) Justification of the non-breakage of the glazing opposite the impact

d)Justification for the non-breakage of one or other of the components.

e) Justification for the non-breakage of the component opposite the impact if the latter more than 10 mm.

The primary function of STOP CHOC laminated glass is therefore to maintain broken glass in the joinery, but its significant resistance to shocks and deformation allows it to be used for specific technical applications, such as:

  • Windows
  • Balustrade glazing
  • Roof glazing
  • Stop Choc Plus burglar-resistant glazing, for example
  • Building façades
  • Residential windows