yellow decks

[Guest]

Help - our GRP boat is 3 years old. The deck is turning yellow and has black pitting marks. Has anyone got any ideas what this could be ?

 

[rich]

probably fall out from chimneys, power stations ect.....

 

[jfkal]

Could be dirt form pollution. If you cannot clean it away it is potetially low grade gelcoat reacting to UV light (Yellow). Poor applied gelcoat with tiny bubbles close to the surface. They crack open after a while and collect dirt (black spots) check with a mignifiying glass. Jeanneau"s have a lot of those problem.

 

[steve_cronin]

What make & class of boat is it?...nm

..

 

[Guest]

Thanks for the reply - yes , our boat is a Jeanneau 1998 Sun Odyssey. You seem to know about this problem? Any more info ? Thanks Ian

 

[Guest]

Re: What make & class of boat is it?...nm

Hi Steve

She is a Jeanneau Sun Odyssey 1998 - you seem to know something -??

Ian

 

[jfkal]

Ian,

I have a Sunshine built in 1985 with the same problem. Can't say when it started since I bought her only a few years ago. Under a magnifier you see that the whole deck is covered with tiny burst bubbles. To small to patch them up. The only way is to give the whole deck a full Polyurethane paintjob. I have not done that yet due to cost. Dunno how the warranty period is for Jeanneaus but guess it is worth trying to get back to them on this. However out of experience Jeanneau always suffers memory loss once you have bought and paid the money. Aftersales service is virtually non existent. I am waiting since three month for a spare part quote from the dealers.
If you consider Polyurethane, get it done by professionals the stuff is two components and a bitch to work with. Needs to be sprayed and you need full body and repiratory protection otherwise you will not live to enjoy the result of the job.
Not encouraging, I know. But guess that's thje story.

Brgds

Joerg

 

[steve_cronin]

Re: What make & class of boat is it?...nm

Not about janneau but Hunters had a problem about eight years ago with the toe rails of some boats yellowing. it was due to a bad mix of gelcoat.

Just on another tack, are you berthed somwhere in the Southampton area?

We had this yellowing occur on our boat (a hunter 30) berthed in Port Hamble. It was thought to be the fall-out from the Fawley refinery or the power station. Liberal application of elbow grease & T-Cut removed it and two coats of Minute Wax kept it away.

Steve Cronin

 

[duncan]

black and yellow like this could be attributable to some kid of metal pollution - I experienced it when a small dory was left for a few months near a railway embankement - brake dust from the trains containing metal landed on the f/glass then rain oxidised it and the results were as you described.
PLacew a rusty nail on some old f/glass gell to see just how fast this can happen !