What is safety glass? Many of you know or don’t know much about it. Safety glass is a type of glass that has additional features to make it less likely to break or cause harm when broken. There are different types of safety glass, such as toughened, laminated, and wire mesh glass. Each type has its own advantages and disadvantages depending on the application. You must understand or consider the basics of glazing if you are going to do or hire someone to do window repair and door repair, or any glass or mirror material applications in buildings, NZS 4223 gives you some professional definitions about Safety glass nz.
Toughened glass is glass that has been processed by controlled thermal or chemical treatments to increase its strength. When it breaks, it crumbles into small granular chunks that are less likely to injure people.
Laminated glass is glass that consists of two or more layers of glass glued together by an interlayer, usually made of polymer materials such as PVB and EVA. When it breaks, the interlayer holds the glass together and prevents it from shattering into sharp fragments. Below drawing shows a auto sliding door with laminated glass panes (the draw is reserved by tgm.net.nz)
Safety glass nz
Wire mesh glass is glass that has a wire mesh embedded in it. When it breaks, the wire mesh holds the glass together and prevents it from falling out of the frame. WIred mesh glass is more likely used for fire-resistant windows and doors, in shop front and prison windows.
Safety glass applies more and more in window or sliding door repairs and replacement since the Health and Safety regulations have been enhanced and strictly.
How do I know if a glass is safety glass or not?
One way to know if a glass is safety glass or not is to check for permanent markings on the glass. According to the New Zealand Standards NZS 4223: Part 3:1999 and AS/NZS 2208, all safety glass must be marked with the following information.
- the name, registered trademark, or code of the manufacturer or supplier
- the type of safety glazing material (for example, T for toughened glass)
- the Standard to which the material has been tested, such as AS/NZS 2208
- the classification for impact test behaviour (for example, A for Grade A)
The marking is usually found in the bottom left corner viewed from the outside corner of the panel, or on the edge of thick glass. The marking should be legible after installation. Removable labels are not suitable for permanent marking.
Another way to know if a glass is safety glass or not is to look at the glass through polarized lenses, such as sunglasses. Tempered glass, which is a type of safety glass, has a different pattern of stress than ordinary glass. This pattern can be seen as faint lines or spots when viewed through polarized lenses. However, this method may not work for laminated glass, which is another type of safety glass that consists of two or more layers of glass bonded together by an interlayer.
We have 6.38mm clear or opal laminated glass at stock size 1220mm x 2440mm for sale.
For glass and mirror service in Auckland, Please contact us using email:[email protected]; or call 09-5769060, 0210671618
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