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Cromar Pro GRP Top Coat

£35.88 £29.90

Cromar PRO GRP Topcoat is a low odour, pre-accelerated resin specifically formulated for roofing applications.

In stock
5kg Tin
10kg Tin
20kg Tin
In Stock


Cromar PRO GRP Topcoat is a dark grey, pre-pigmented, isophthalic acid based, filled fire-retardant
roofing top-coat. 

Product use

CROMAR PRO GRP Topcoat is recommended for use in flat roofing applications especially where regultions specify a fire-retardant system.


CROMAR PRO GRP Topcoat is designed for roller application which exhibits good levelling characteristics and sag resistance on inclined surfaces. The cured top-coat is tack-free and watertight with excellent water and weather resistance providing a maintenance-free surface.

Conforms to BS476 Part 3:2004, FAB classification. When applied at a wet film thickness of 500 – 600 microns and fabricated with a single ply of 450 grams per square metre of emulsion bound chopped strand mat, consolidated with the optimum quantity of an orthophthalic acid based general purpose laminating resin onto 18 mm OSB3 grade board.


  •   5KG Tin - 11 sqm (Allowing 10% waste)
  • 10KG Tin - 22 sqm (Allowing 10% waste)
  • 20KG Tin - 44 sqm (Allowing 10% waste)
Technical Details
More Information
Weight No
Stock Type In Stock
Brand Name Cromar
Color Slate Grey
Coverage 0.5Kg/m2 (0.45kg/m2 Allowing 10% Waste)
Delivery Lead Time No
Downloads 2

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Questions & Answers (5)
Customer Questions
How Long Does a GRP Fibreglass roof Last?

If Installed Correctly a Fibreglass roof has a typical life expectancy in access of 35yrs 

What Surface can a Fibreglass roof be Installed onto.

Fibreglass roofs must always be laid onto new and dry OSB3 boards. For best results we recommend using tongue and groove boards.

Can I Walk on a fibreglass roof?

Yes. Fibreglass is a very tough and durable material. This means walking on your roof shouldn't affect the integrity of the roof 

Does if have to be dry for me to install a Fibreglass Roof?

Yes, Never Attempt to install a Fibreglass Roof onto wet or damp boards.

What is the minimal temperature i can install a Fibreglass roof in?

The minmum temperature for installing a fibreglass roof is 5 degrees C. 

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