The thickness of anti-slip glass (usually referring to laminated glass or tempered laminated glass) is not a fixed value, but is determined by its usage scenario, safety requirements and size.
In simple terms, the total thickness of the most common anti-slip glass (such as shower room partitions and floors) is usually between 8mm and 19mm.
The composition of anti-slip glass
Anti-slip glass is usually not single-pane glass but is composed of the following parts:
Glass substrate: Usually tempered glass, it is very strong. Even if it breaks, it will shatter into small particles and is less likely to cause injury.
Intermediate layer: One or more layers of PVB (polyvinyl acetal) or SGP (ionic intermediate layer) films are used to bond the glass together.
Anti-slip layer: The key to achieving anti-slip functionality. There are mainly two forms:
Built-in anti-slip materials: During the interlayer process, anti-slip particles (such as ceramic sand, emery) are directly embedded in the middle layer.
Surface treatment: The topmost layer of glass surface is subjected to processes such as sandblasting, engraving, and printing to form a rough anti-slip surface.
Common application scenarios and corresponding thicknesses
The following are typical thickness configurations of anti-slip glass for different scenarios. You can refer to them according to your usage:
Shower enclosure partition/shower enclosure floor
This is the most common application.
Shower room glass door/partition
Common thicknesses: Tempered glass of 8mm or 10mm.
If higher requirements are placed on safety and sound insulation, laminated glass of 6mm+6mm or 8mm+8mm will be used, with a total thickness of approximately 12.8mm or 16.8mm.
Shower room floor (platform/chassis) :
Common thicknesses: 12mm to 19mm.
Typical structure: Usually a laminated + laminated structure is adopted, for example:
(6mm tempered glass + 1.52mm PVB + 6mm tempered glass) + (1.52mm PVB) + (6mm tempered glass + 1.52mm PVB + 6mm tempered glass)
This structure is extremely sturdy, capable of withstanding the weight of the human body and impact, with a total thickness of approximately 19mm.
2. Stair treads
Common thicknesses: 15mm to 22mm or even thicker.
The reason is that the stair treads need to withstand continuous dynamic loads and possible impacts, and thus have extremely high requirements for strength and rigidity. Usually, multi-layer laminated glass is adopted, such as three layers of 12mm laminated glass, with a total thickness of over 30mm.
3. Commercial space floors (such as shopping malls, corridors)
Common thicknesses: 15mm to 25mm.
The reason is that factors such as large foot traffic and the possibility of heavy objects being placed need to be taken into consideration. The thickness selection is directly related to the span (the distance between support points). The larger the span, the greater the required thickness.
4. Roof, skylight
Common thickness: over 15mm.
The reason is that it needs to withstand natural forces such as wind pressure and snow load, and laminated glass or laminated insulating glass must be used to ensure absolute safety and prevent the glass from falling and injuring people.
Factors to consider when choosing thickness
Span: This is the most important factor. The larger the glass plate, the farther the distance between the support points, and the thicker the required thickness.
Load: How much weight is expected to be borne (such as the flow of people, whether there will be heavy objects placed).
Safety standards: Must comply with national (such as China's "Technical Code for Application of Building Glass" JGJ 113) and local building codes. Especially in public places, the thickness must be calculated and determined by professional structural engineers.
Cost: The greater the thickness, the more layers, the more complex the process, and the higher the price.
