Grating fire resistance
What resin type do I need?
Safe Tread GRP Grating has been tested in accordance with the ASTM E–84 tunnel test. Depending on the resin type it achieves a Class 1 flame spread rating of between 5–25 or less. Test reports are available on request. Special fire retardant requirements can also be met with extra additives.
Grating Resin Type |
Fire Rating & Operating Temperature |
Application |
Type O Orthophthalic Polyester resin |
Fire retardant, flame spread rating ASTM E84 Class 1, 25 or less, operating temperature -50°C to +100°C. |
For use in water/wastewater or air-ageing applications, light industrial applications and in the wavezone areas of offshore platforms where the environment is moderate. Although Type O is the least chemical resistant resin it still offers superior performance to traditional flooring products such as steel, aluminum and wood and is the most economical resin available. |
Type I Isophthalic Polyester resin |
Fire retardant, flame spread rating ASTM E84 Class 1, 25 or less, operating temperature -50°C to +105°C. | For use in the environments of middle concentration inorganic acid, inorganic alkali, etc. |
Type F Food grade Polyester resin |
Fire retardant, operating temperature -50°C to +105°C. | Often used in food plants or water treatment plants. |
Type V Vinyl Ester resin |
Fire retardant, flame spread rating ASTM E84 Class 1, 25 or less, operating temperature -50°C to +110°C. |
Environments with serious corrosion issues. |
Type HV High flame resistant Vinyl Ester resin |
Enhanced fire retardant, flame spread rating ASTM E84 Class 1, 10 or less, operating temperature -50°C to +110°C. Grating has passed assessment by ABS (American Bureau of Shipping). |
Environments with serious corrosion requiring better flame resistance. |
Type P Phenolic resin |
Low smoke and superior fire resistance, flame spread rating ASTM E84 Class 1, 5 or less, smoke developed index zero, operating temperature up to 180°C. |
For use in areas where fire resistance, low smoke, and low toxic fumes are critical e.g. offshore applications. |