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Old 08-06-2012, 01:24 PM
Islandtrader Islandtrader is offline
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Quote:
Originally Posted by Capt Chuck View Post
Terry

Siganture Finish (2 part urathane) paint can be painted below the waterline & left in the water. My bottom was painted in the 80's and has been left in the water weeks at a time without issues

http://www.signaturefinish.com/
Denny, Chuck for reasons I would rather not get into, Signature is not an option for me at this time.

if the label says no under water line that should enough to tell you not to use it.

I would agree, however it seems to say that if your waterline has changed due to weight or ??? the paint on the side of your boat will what...PEEL OFF??
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Last edited by Islandtrader; 08-06-2012 at 01:28 PM.
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Old 08-10-2012, 09:13 AM
bigeasy1 bigeasy1 is offline
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Several years ago a friend and I repainted two identical 18' Starcraft aluminum boats.I sprayed mine with Sherwin Williams(automotive) Sunfire which is a two part urethane, mostly used on airplanes and fleet trucks.
He sprayed his with Imron.

Both of them looked great and both paints were extremely durable. We went on a three week trip to lake Champlain and both of these boats were in the water for the whole time.
When we pulled them to head for home,his boat with the Imron paint had all these tiny tiny blisters(felt like mild sandpaper)below the water line.
My hull with the Sunfire was perfect.

We had no idea why the difference,but he called the automotive jobber and was told that they don't recommend Imron below the water line.I never checked on the sunfire,but after ten years of use,and abuse, and it looked as good as the day it was painted.

On my 23 Seacraft,I used Epifanes two part urethane on the hull,(only to the waterline),but I noticed in a couple areas where the paint sits a couple inches below the water, it also is getting some tiny blisters.The people at Epifanes told me that it's a saturated, aliphatic urethane which is similar to Imron.Maybe that's why it blistered when under the water.
I just figured that all two part urethanes were of the same chemical makeup,but was told by Epifanes that there are differences in the makeups of all of them.

I would assume that's why some paints like the Signature and Sunfire will hold up where others don't.
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Last edited by bigeasy1; 08-10-2012 at 09:16 AM.
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  #3  
Old 08-10-2012, 12:48 PM
Bushwacker Bushwacker is offline
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[QUOTE=bigeasy1;206294 . . . Both of them looked great and both paints were extremely durable. We went on a three week trip to lake Champlain and both of these boats were in the water for the whole time.
When we pulled them to head for home,his boat with the Imron paint had all these tiny tiny blisters(felt like mild sandpaper)below the water line.
My hull with the Sunfire was perfect.

We had no idea why the difference,but he called the automotive jobber and was told that they don't recommend Imron below the water line.I never checked on the sunfire,but after ten years of use,and abuse, and it looked as good as the day it was painted.

On my 23 Seacraft,I used Epifanes two part urethane on the hull,(only to the waterline),but I noticed in a couple areas where the paint sits a couple inches below the water, it also is getting some tiny blisters.The people at Epifanes told me that it's a saturated, aliphatic urethane which is similar to Imron.Maybe that's why it blistered when under the water.
I just figured that all two part urethanes were of the same chemical makeup,but was told by Epifanes that there are differences in the makeups of all of them.

I would assume that's why some paints like the Signature and Sunfire will hold up where others don't.[/QUOTE]

John,

Your experience with Sunfire is the same that I've had with Signature, which makes sense, because I believe SW Sunfire and Signature are the same stuff! I was looking for some catalyst about the time Tom had his fire, and I found the SW store in WPB where he buys most of his supplies. The color selection is pretty limited on Sunfire however, but Tom can provide Signature Finish in whatever color you want. He created a perfect match for my gelcoat. Denny
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