Polyurethane on toe rails? - SailNet Community
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post #1 of 11 Old 05-03-2010 Thread Starter
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Polyurethane on toe rails?

Has anybody used polyurethane on their toe rails? A guy in the boat yard used it on his boat last year and loves it. He got the idea from longtime boaters that have been using it for years. One of my concerns was that it's not a good UV protector, but he claims it is.

Anybody have any thoughts?
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post #2 of 11 Old 05-03-2010
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If you're talking home center polyurethanes, definitely not a good choice for exterior finishing as it has either no or very minimal UV protection.

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Last edited by Maine Sail; 05-03-2010 at 04:55 PM.
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post #3 of 11 Old 05-03-2010 Thread Starter
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After I posted, I did a little research and there appear to be new polyurethanes with UV protection that are for outdoor use.
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post #4 of 11 Old 05-03-2010
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Might be better on toenails!

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post #5 of 11 Old 05-03-2010
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Quote:
Originally Posted by CalypsoP35 View Post
Has anybody used polyurethane on their toe rails? A guy in the boat yard used it on his boat last year and loves it. He got the idea from longtime boaters that have been using it for years. One of my concerns was that it's not a good UV protector, but he claims it is.

Anybody have any thoughts?
Urethane is good IF it has the proper UV blockers such as 'ferrous oxide' added. Many of the 'longest lasting & extremely expensive' boat wood finishes are urethane-acrylic or urethane-epoxide copolymers .... and the 'base coats' have the ferrous oxide UV blockers. The urethane for a watertight/vapor seal, the acrylic for the 'gloss'.

The 'problem' with straight polyurethane is that is a royal PITA to remove/repair, usually requiring deep sanding/scraping.

My previous (now abandoned) method including urethanes on brightwork was to use an oil based varnish loaded with UV inhibiters as the (thick) base coat, then urethane over top of that to 'seal' the coating from vapor (and sometimes 2 part clear urethane over all that. The 'modern' coating systems are faster and longer lasting.

:-)

Last edited by RichH; 05-03-2010 at 12:13 PM.
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post #6 of 11 Old 05-03-2010
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Might be better on toenails!
Perfect - Very good d!

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post #7 of 11 Old 05-03-2010
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Bristol Finish is a two part Poly with plenty of UV. We use it and get about 2 1/2 years service. We put it over three coats of West with 207 hardner. It is a very hard finish and tends to crack, at seams, yellow and lift.
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post #8 of 11 Old 05-03-2010
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Urethane doesn't like hard edges and corners.
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post #9 of 11 Old 05-03-2010
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Varnish can be repaired, Urethane can not.

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I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
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post #10 of 11 Old 05-03-2010
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This whole thing has been solved for so long. Heat gun, scraper, 120 grit, 220 grit, varnish, brush, mineral spirits, respirator, and time time time.

Varnish is great at what it does. People search for a clear invincible wood finish that is easy to repair, cheap, and easy to apply with no maintenance.

It will never be found. Give up.
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