Fire Resistant Finish - What GRP Grating Type Do I Need?

Fire resistance

Fire resistance

Fire resistanceSui Generis 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.


Fibreglass Grating Colours

Resin system

Sui Generis Fibreglass Grating can be made in any colour of your choice. The moulded-in colour is made by even mixing of pigment and resin and will not fade or require painting.

All of the raw materials are carefully selected from qualified suppliers to ensure the excellent quality of Sui Generis Fibreglass Grating.

Grating Type

Fire Rating & Operating Temperature


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

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

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

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.


ISO 14001
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When you choose Sui Generis to undertake work on your behalf, it always complies with and exceeds the standards required by relevant legislation. We always advise you what the regulations require before we start.

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