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Old 13-03-2014, 13:15   #1
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Join Date: Aug 2012
Location: New Hampshire
Boat: Gulfstar 50 ketch
Posts: 241
Polyurethane on spars, one part, two part?

I am considering renewing the paint on my alum. spars. Starting small with the spreaders, then if that goes well, the booms, and finally the masts. Assuming I read the directions, do good prep work, have the right temperature, etc., would you recommend one or two part poly? Is the two part considerably touchier to apply with a brush? I read it is harder and more UV resistant. Brand? Petit Ezpoxy2? Interlux Perfection? Thanks!

The masts I will have to paint outside. The others I can do in the shed or the garage. Where the masts are it is highly unlikely that I could get my painter in there to spray, so it will have to be brushing or nothing at this point. The existing white paint has not failed, just getting old and dingy.

I read this thread:

And I'm probably of the persuasion of Krogansailer. I doubt I would ever get to a point of stripping the mast and "doing it right." Definitely do not have the budget of Flight Plan or the time of Rhapsody. But if the consensus is "Don't touch the masts until you can do it right" then I would ponder that. Thanks.
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Old 13-03-2014, 15:37   #2
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Join Date: Aug 2007
Location: Western Caribbean
Boat: Seaton Durbeck 48
Posts: 59
Re: Polyurethane on spars, one part, two part?

I applied Interlux Perfection six years ago on my mast, boom, and spreaders and it still looks as good as the day it was applied, but be prepared to properly prep, prime, and apply at least two coats. Takes time and some sanding, but the end result is well worth the effort.
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