Benefits and advantages
Even safety glass – toughened, laminated or reinforced – is not enough to stop the fire from spreading and it breaks down in the first few minutes. Ordinary glass breaks in a fire within the first 3-4 minutes, when the temperature rises to 450°C and reaches the stability limit of ordinary glass, and a difference of more than 35°C in the sheet of glass occurs. Only special fire-resistant glasses can contain the fire.
According to the European standard EN 13501-2, building elements are classified according to their fire resistance into three classes – E, EW and EI.
Class E
These glasses stops flames, smoke and other products of combustion for a certain period of time but do not prevent the spread of heat.
Class EW
Higher-class glass capable of containing flames, smoke and other products of combustion and partially limiting the spread of heat. Thermal radiation shall not exceed a specified level of max. 15 kW/m2.
Class EI
Premium glass that contains flames, smoke, other combustion products and heat. The temperature on the opposite side of the glass to the fire shall not exceed 140°C for a specified period of time. The design of these glasses ensures that the glass is effective in a fire – when the toughened glass breaks, the energy-absorbing fire gel between the panes starts to work and becomes opaque when exposed to the temperature, creating a reliable barrier to the spread of fire.
Fireblock / Vetrotech
Fireplace glass
Advantages
Fireblock, Vetroflam, Contraflam, Pyroswiss are the main products that can be combined with various glasses. The manufacturer guarantees the integrity of the product from 30 to 120 minutes, depending on which product you choose.
Customization options
All of these fire-resistant glasses can be equipped with all sorts of other functions, such as solar or sound control, privacy.
Properties table
| Glass structure | Glass thickness | Weight | Thickness tolerance | Light transmission | Heat transfer coefficient | Sound insulation |
|---|---|---|---|---|---|---|
| Title | mm | kg | mm | LT, % | Ug, W/m2K | Rw, dB |
| E class | ||||||
| 6 PYROSWISS E30 | 6 | 15 | ±0,2 | 89 | 5,7 | 32 |
| 8 PYROSWISS E30 | 8 | 20 | ±0,3 | 88 | 5,7 | 34 |
| 10 PYROSWISS E30 | 10 | 25 | ±0,3 | 88 | 5,6 | 36 |
| 66.2 PYROSWISS STADIP E30 | 12,8 | 31 | ±1 | 85 | 5,5 | 38 |
| EW class | ||||||
| 6 VETROFLAM | 6 | 15 | ±0,2 | 80 | 3,9 | 32 |
| 66.2 VETROFLAM STADIP | 12,8 | 31 | ±0,4 | 78 | 5,5 | 35 |
| 13 CONTRAFLAM LITE | 13 | 30 | ±2-1 | 87 | 5,2 | 37 |
| 14 CONTRAFLAM LITE | 14 | 31 | ±2-1 | 85 | 5,1 | 38 |
| EI class | ||||||
| 21 FIREBLOCK 30 | 21 | 38 | ±3-2 | 85 | npd | 42 |
| 25 FIREBLOCK 60 | 25 | 42 | ±3-2 | 84 | npd | 43 |
| 33 FIREBLOCK 90 | 33 | 52 | ±3-2 | 85 | npd | 45 |
| 16 CONTRAFLAM 30 | 16 | 34 | ±3-2 | 86 | 4,8 | 38 |
| 25 CONTRAFLAM 60 | 25 | 52 | ±3-2 | 82 | 4,3 | 41 |
| 36 CONTRAFLAM 90 | 36 | 72 | ±3-2 | 80 | 3,7 | 45 |
| 58 CONTRAFLAM 120 | 58 | 108 | ±5-3 | 67 | 2,2 | 46 |
Advantages
This is heat-resistant glass with a surface polished on both sides and coated with a metal micro-layer on one side. The glass is used for glazing fireplace doors, which is why it is also called fireplace glass.
The heat-reflecting layer retains heat inside the fireplace or stove, which results in combustion at a higher temperature, which improves the performance of fireplaces and stoves with a water circuit. Glass ceramics smoke much more slowly, because the glass heats up faster and does not attract soot, which allows you to enjoy the beautiful view of burning firewood for longer. This is a popular product that meets the constantly growing requirements of fireplace manufacturers and buyers. It is heat-resistant glass that can withstand temperatures of up to 650°C, is not afraid of temperature jumps and has an almost zero expansion coefficient. Heat-reflecting ceramic glass is installed with the metallized surface facing the outside of the fireplace or stove. Heat-reflecting glass ceramics does not contain any toxic substances and is environmentally friendly.
The maximum dimensions of glass ceramics can be 2000 mm x 1100 mm.
Customization options
The glass is suitable for glazing fireplaces, stoves and oven doors.