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Post by Deleted on Jan 24, 2018 16:11:52 GMT
I'm going to attempt to paint part of the roof of one of my steel boats. Its currently got a fairly shagged paint job. I can clean the rust spots and feather the edges of any bare metsl areas but not interested in large scale paint removal. then I'm intending to go over it with a grey zinc phosphate primer. I'm not looking for a highly attractive coating just a decent base to stick an overcoat on which will also be grey. Main priority is to get it painted as it is looking quite rough (9 years at least on current job and lots of items scraping about on the roof). Would this be OK ? Look at this on eBay www.ebay.co.uk/itm/161219892658 |
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Post by cygnus on Jan 24, 2018 16:31:26 GMT
It'll do the job fine, you'll probably be using a roller, so the fact that it's quick drying won't bother you. Will stand the elements better than red oxide as well.
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Post by lollygagger on Jan 24, 2018 16:44:59 GMT
It's xylene based and while it might not react with 9 year old oil based paint, new oil based paint on top might be baaaad, imagine paint stripper.
The downloadable advice sheet states that it should be overcoated with xylene based paints.
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Post by quaysider on Jan 24, 2018 16:52:22 GMT
when I was doing "rushed jobs" in fairground painting land, so long as the xylene based stuff went onto bare metal and DRIED, over painting it with oil based was fine - if I fecked up and did it the other way around... as has already been said, paint stripper bubbles.
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Post by cygnus on Jan 24, 2018 16:59:54 GMT
Don't puddle it on and it should be okey dokey, and any normal single pack paint will go on it.
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Post by lollygagger on Jan 24, 2018 17:07:08 GMT
when I was doing "rushed jobs" in fairground painting land, so long as the xylene based stuff went onto bare metal and DRIED, over painting it with oil based was fine - if I fecked up and did it the other way around... as has already been said, paint stripper bubbles. so overpainting the existing keyed oil based paint should be ok? Personally as it's designed for blasted steel, I'd stick to the bare metal with this then overpaint the lot with an oil based primer. I have this exact job to do too.  |
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Post by Deleted on Jan 24, 2018 17:20:36 GMT
You mean just fill in the bits I sand out with the zinc phosphate paint then over paint the whole lot with weather shield or something?
That's a good idea. Its a colour change from olive green to battleship grey so I suppose two coats on top would be sensible if I haven't already put a grey primer on?
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Post by peterboat on Jan 24, 2018 17:20:47 GMT
Remember a great job requires good preparation so rub and clean all the roof down removing any loose paint otherwise like my neighbour you will be doing the job yearly!!!
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Post by Deleted on Jan 24, 2018 17:23:38 GMT
Remember a great job requires good preparation so rub and clean all the roof down removing any loose paint otherwise like my neighbour you will be doing the job yearly!!! Yes for this particular boat I will do some prep work. The roof isn't huge and the original paint job was a good one. |
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Post by lollygagger on Jan 24, 2018 17:26:10 GMT
You mean just fill in the bits I sand out then over paint? That's a good idea. Its a colour change from olive green to battleship grey so I suppose two coats on top would be sensible? You could dab then go straight for the top coats but you'll get a better result priming it grey first. What seems initially more work will end up as less because your first top coat otherwise won't cover as well as primer so you might as well use primer. Top coats paints lovely on primer but not well on a mish mash of old topcoat, chimney staining and zinc primer. |
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Post by Deleted on Jan 24, 2018 17:30:12 GMT
You mean just fill in the bits I sand out then over paint? That's a good idea. Its a colour change from olive green to battleship grey so I suppose two coats on top would be sensible? You could dab then go straight for the top coats but you'll get a better result priming it grey first. What seems initially more work will end up as less because your first top coat otherwise won't cover as well as primer so you might as well use primer. Top coats paints lovely on primer but not well on a mish mash of old topcoat, chimney staining and zinc primer. I misread what you wrote earlier. Oil based primer after filling the bare bits with this zinc phosphate stuff. Got it. |
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Post by Andyberg on Jan 24, 2018 17:35:20 GMT
Couldn't you get one of your cabin boys off your super yacht in Monaco to come over and do all the prep? 😉
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Post by Deleted on Jan 24, 2018 17:48:23 GMT
Couldn't you get one of your cabin boys off your super yacht in Monaco to come over and do all the prep? 😉 They* would need paying. I never pay anyone else to bodge something I can bodge myself. *they are not boys. They are young ladies. |
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Post by quaysider on Jan 25, 2018 8:57:18 GMT
Couldn't you get one of your cabin boys off your super yacht in Monaco to come over and do all the prep? 😉 They* would need paying. I never pay anyone else to bodge something I can bodge myself.
*they are not boys. They are young ladies. careful with comments like that these days or you'll have to give back the 2million you raised for charity the other night |
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Post by smileypete on Jan 25, 2018 18:52:35 GMT
There's also self priming metal paints out there, bit like hammerite. I guess ordinary zinc phosphate primer is going to need overcoating before long or the rust will eventually come through. Maybe have a gander at the range of paints from online trade sellers like promain and paints4trade and decorating direct, bearing in mind ya get what ya pay for. Zinc rich primer is the gold standard, but has it's foibles and limitations, and it's pricy. ISTR there's a steel boat forum out there, or try the likes of YBW forum, see what the steel lumpy water boaters do to their botes. |
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