Fibreglass Resin FAQ'S

Click a question to reveal the answer!

Q: What percentage do you mix hardener to resin?

A: 1% to 2% (9cc to 18cc per 1kg) for Resin 2% to 3% (18cc to 27cc per 1kg) for Gel Coat. These percentages are based on working in a temperature of 61 degrees F.

Q: Are redundant GRP based products classified as special wastes or can they go to landfill?

A: Redundant GRP based products can go to landfill as long as the resin products are fully cured beforehand.

Q: What resin should be used with carbon fibre? Polyster or Epoxy? Also where can I find comparison between the strength and other characteristics of Glass fibre and carbon fibre.

A: Carbon Fibre should only be used with Epoxy or Vynalester Resin. You would need to visit a Manufacturers website to find strength characteristics.

Q: How do I thicken a resin and polyester colour paste? Will it be OK to use as a gel coat filler for small repairs. I am having trouble matching the gel coat on my boat with the usual plastic padding gelcoat filler.

A: Resin can only be thickened with talc, fillite, A.T.H or any other readily available fillers. Gel coat is already thickened therefore I would not suggest that you add any more. Colour matching is very difficult unless you have the manufacturers RAL number. If you are going to carry out the repair with gel coat, please call our offices for some advice.

Q: Where can I receive Gelcoat repair and Fiberglass training?

A: If you are in the UK the best place to come would be here at CYB! Visit our Workshops page to find out more details.