I have just bought a Yellow Vision IOM made by P&P Yachts and it as a hairline crack in the gelcoat and I would like to fill and make good.

I have white gelcoat and I know yellow coloured pigments for gelcoats are available, but just wondering if any owner's of P&P Yachts yellow boats may know which is this colour is name or RAL number?

I am not sure that Phil used RAL numbers he sent me this order form for my boat and i have attached it here for you - the link for collours was to http://www.llewellyn-ryland.co.uk/standardrange.html and Golden Yellow was 3754 in that range. Phil described the layup as Layup, colour pigmented epoxy gel coat – epoxy resin in layup.

Hope this is helpful.

2020 order form.xlsx

have just checked the link and see it moved to this one - Gelcoats and Flocoats New | Llewellyn Ryland

Edited Saturday at 15:311 day by jcc
copied file was not right one

Hi JCC

Many thanks for your very useful information, I found the orgininal colour card using the wayback machine to find obsolet web pages.

Now need to get some ordered.

Just ordered some pigment, easier to get the correct colour than I thought.

Just need to be brave and shape the crack to accept new gelcoat

Cheers

I may be a bit out of date as I haven't used a gelcoat in a while but my understanding is:

The gelcoat you linked to is a polyester gelcoat whereas the lay-up info claims it is an epoxy gelcoat. I'm not entirely certain but I though there is no such thing as an epoxy gelcoat and you have to use a special type of polyester that is compatible with an epoxy lay up. See https://www.easycomposites.co.uk/epoxy-bonding-polyester-gelcoat-clear

Standard Polyester gelcoats don't set hard when exposed to air i.e. they remain tacky. This makes 'filling scratches' difficult. For more serious damage you used to have to make a mould to fit on the outside, then put the gelcoat on first from the inside and then use mat over it.

Perhaps someone who has tried more recently could provide some feedback but I would be wary of making it worse. In my day we just used to live with gelcoat cracks. The boats I have made recently don't have a gelcoat (carbon / epoxy).