Coppercoat - re-application?

rbcoomer

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Evening All,

I have a 25' boat with 20 year old Coppercoat. The boat is new to us, but previous owner had in the water around 5 months a year and pressure washed himself when lifted out. There are a few small areas that need touching up and having purchased out of the water, I have already abraded the hull ready for relaunch in a couple of weeks. I'm intending to leave in the water and use all year around however, so she's likely to be in until around July next year (I can pull out and wash as needed). Given the age of the Coppercoat, I'm thinking it would be worth re-coating prior to launch. The question is, should I bother or wait and see how the existing holds up and if I do (preferred option) should I do another 4-5 coats or just a couple? The boat is currently on a trailer and thus not easy to paint, so fewer coats would be better given they need to on before the previous coat is dry!

Any previous experience of re-coating and any tips welcomed! I'm assuming I can apply directly to sanded Coppercoat if I go over again? (It's about 3 weeks since I abraded, so not going to be 'clean' without doing again)

Many thanks,

Robin
 
If you have exposed gelcoat or down to base epoxy, then primer and cover the areas... a cheap and simple fix which will reduce the rate the hull is absorbing water (inevitable) and thus reducing the risk of the dreaded osmosis forming...
 
If you have exposed gelcoat or down to base epoxy, then primer and cover the areas... a cheap and simple fix which will reduce the rate the hull is absorbing water (inevitable) and thus reducing the risk of the dreaded osmosis forming...

Thanks, I was going to touch in the few exposed spots but wonder if I should add a couple of coats all over given the age?
 
Evening All,

I have a 25' boat with 20 year old Coppercoat. The boat is new to us, but previous owner had in the water around 5 months a year and pressure washed himself when lifted out. There are a few small areas that need touching up and having purchased out of the water, I have already abraded the hull ready for relaunch in a couple of weeks. I'm intending to leave in the water and use all year around however, so she's likely to be in until around July next year (I can pull out and wash as needed). Given the age of the Coppercoat, I'm thinking it would be worth re-coating prior to launch. The question is, should I bother or wait and see how the existing holds up and if I do (preferred option) should I do another 4-5 coats or just a couple? The boat is currently on a trailer and thus not easy to paint, so fewer coats would be better given they need to on before the previous coat is dry!

Any previous experience of re-coating and any tips welcomed! I'm assuming I can apply directly to sanded Coppercoat if I go over again? (It's about 3 weeks since I abraded, so not going to be 'clean' without doing again)

Many thanks,

Robin

Sand thoroughly with 80-120 grit. Apply coppercoat as new, 4 coats. You'll then get another 20 years. If you did an abrade for launch that should have been a fine grit, and so will be no good for overcoating.
 
If you ask, you are probably in doubt and have concerns ... trust your instinct and re-apply ... you do not want to be where I am :) ...

Thanks :encouragement: Yes, mine still has a nice green coating - no thin bits, but the odd bits missing...

Sand thoroughly with 80-120 grit. Apply coppercoat as new, 4 coats. You'll then get another 20 years. If you did an abrade for launch that should have been a fine grit, and so will be no good for overcoating.

Ideal thanks - although I was hoping for less coats given the limited access on the trailer... :rolleyes: Yes, sanded with a fine paper (600ish I think?) The only problem I foresee is I'll have to do the 4 coats, missing the bits by the rollers, allow to dry and then move the boat back on the trailer 12" to do the missed bits... Not ideal, but at least there's Coppercoat already on there.

Alternative would be to patch the missing bits for now and get lifted/stowed next summer at work instead of pulling out onto trailer. I wanted to avoid having to keep pulling out to wash between now and then. A fresh coating has to be more effective than a 20 year old one... :)
 
Thanks :encouragement: Yes, mine still has a nice green coating - no thin bits, but the odd bits missing...
Yats.


Ideal thanks - although I was hoping for less coats given the limited access on the trailer... :rolleyes: Yes, sanded with a fine paper (600ish I think?) The only problem I foresee is I'll have to do the 4 coats, missing the bits by the rollers, allow to dry and then move the boat back on the trailer 12" to do the missed bits... Not ideal, but at least there's Coppercoat already on there.

Alternative would be to patch the missing bits for now and get lifted/stowed next summer at work instead of pulling out onto trailer. I wanted to avoid having to keep pulling out to wash between now and then. A fresh coating has to be more effective than a 20 year old one... :)

ou do have to do the 4 coats. Having to move the boat and do pad/roller areas is normal.

You could do the left hand side of the boat and the pad on the right, and when it's cured moved the boat and do the right hand side of the boat and the pads on the left. 2 shorter days are less boring.

You can do half the boat but you can't do half the coats.....
 
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A yachtie friend out here in Spain recoated his 10 year old Coppercoat this year.
He did exactly as Elessar said.
48 foot sailing boat - he took several days sanding down the old to prepare it for the new coats.
And then 4 coats of new Coppercoat.
I was with them a week ago in Ibiza - she looked fantastic.
Do the job properly and you will be pleased with the result.
I expect to do the same to JW in a couple of years time.
 
A yachtie friend out here in Spain recoated his 10 year old Coppercoat this year.
He did exactly as Elessar said.
48 foot sailing boat - he took several days sanding down the old to prepare it for the new coats.
And then 4 coats of new Coppercoat.
I was with them a week ago in Ibiza - she looked fantastic.
Do the job properly and you will be pleased with the result.
I expect to do the same to JW in a couple of years time.

Yes, I know you're both right - just time constrained and impatient ;)
 
I would contact the people from Coppercoat and ask for their advice. The are very helpful.

Thanks, but all done now. I abraded and re-coated with 4 coats. Horrendous job on a trailer, but persevered and could walk upright again a few days later! :D Well worth the effort however, we launched on December 28th achieving 31kts and took her around to Dartmouth last weekend and still 31kts. Ok, so it's not been warm, but she's in a shallow harbour where everything seems to be green below water. Might quick lift and wash mid-season if needed, but otherwise will just be a wash and drive service in October/November. :encouragement:
 
Allow me two questions.

- After how many years did you re-coat?
- Why did you re-coat?

Thanks in advance.

Previous owner was happy with the Coppercoat but said it had been on there around 20 years. Purchased the boat on an unserviced road trailer and had it delivered to my drive with a hiab. Getting in/out of drive isn't easy and thus I thought it was worth a fresh application whilst ashore. The previous owner only had the boat in the water for 5 months of the year max and I intend to use all year round. I didn't want to get to June and find I had a problem, so felt it was worth £400 and a couple of days work! I'll lift & wash in the Autumn anyway for a drive service/antifoul and new anodes, but should be a quick turnaround not having to worry about the hull.
 
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