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GRP Roofing Topcoat 5kg

Original price was: £45.81.Current price is: £39.16. Excl Vat

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Roof Paint Grey 5kg

Iron Grey GRP Roofing Topcoat


Iron Grey GRP Roofing Topcoat is an isophthalic top-coat specifically designed for use with our GRP fibreglass matting/Resin system. It is a high-quality, durable, and weather-resistant coating that provides an excellent level of waterproofing for flat or sloping roofs.

Roof Paint Grey 5kg Key Features:

  • High-quality waterproofing: Iron Grey GRP Roofing Topcoat is a premium-grade product that provides exceptional protection against water penetration.

  • Durable and weather-resistant: The coating is formulated to withstand the harsh conditions of the outdoors, including extreme temperatures, UV rays, and moisture.

  • Excellent levelling properties: The top-coat has good leveling characteristics, ensuring a smooth and uniform finish.

  • Sag resistance: The coating is designed to resist sagging on inclined surfaces.

  • Tack-free and watertight: Once cured, the top-coat is tack-free and watertight, providing a long-lasting protective barrier.

  • Maintenance-free: The coating is designed to require minimal maintenance, keeping your roof looking its best for years to come.


Iron Grey GRP Roofing Topcoat is easy to apply using a roller or brush. It should be applied to a dry, dust-free surface that has been sanded with 40-grade sandpaper and wiped clean with acetone. The recommended application rate is 0.6 kg per m┬▓. For optimum performance, the top-coat should be applied in 1 coat, 

Roof Paint Grey 5kg Coverage:

The coverage of Iron Grey GRP Roofing Topcoat depends on the thickness of the application. A wet film thickness of 500 to 600 microns will provide the desired characteristics in the finished structure. The coverage for each size container is as follows:

  • 5 kg: 8.3 m┬▓

  • 10 kg: 16.6 m┬▓

  • 20 kg: 33.2 m┬▓

Safety and Precautions:

When using Iron Grey GRP Roofing Topcoat, it is important to wear gloves and eye protection to prevent skin contact and eye irritation. The product should be used in a well-ventilated area. Keep out of reach of children and pets.

ResiRoof Catalyst:

Iron Grey GRP Roofing Topcoat requires the use of ResiRoof Catalyst to cure properly. The catalyst should be added to the top-coat at a rate of 2% by volume. For example, you would add 20 ml of catalyst per kg of top-coat.

Roof Paint Grey 5kg Additional Information:

  • Iron Grey GRP Roofing Topcoat is available in 5 kg, 10 kg, and 20 kg containers.

  • The top-coat should be stored in a cool, dry place.

  • The shelf life of the product is 12 months.

I hope this detailed product description is helpful. Please let me know if you have any other questions.

Additional information

Weight 5 kg



Composite Roof Supplies