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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Frozen Cetol		  New Topic  Topic Locked
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danandlu
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USA
175 Posts
Initially Posted - 03/22/2010 :  08:36:07  Show Profile  Visit danandlu's Homepage
It's almost time for me to start thinking about touching up the teak on Chesapeake. In 2006 I bought a quart of Cetol and used maybe half. I know it's been exposed to sub zero temps over the past winters. I was told it could stand freezing once only and then it's no good. I did use it once after one(?) freeze and it was fine. I think it was the paint dealer who told me that. I wonder if that's a general paint statement since this quart was the one and only in Missoula, Montana and not specific to Cetol. I know I can answer my own question by using it again, I don't want to do the work and find it failing even if the product looks good in the can.
Dan Henderson
1982 FK/TR #3328
"Chesapeake"
Missoula, Flathead Lake, Montana
Edited by - danandlu on 03/22/2010 17:52:12

Dave Bristle
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Djibouti
10005 Posts
Response Posted - 03/22/2010 :  10:42:43  Show Profile
What does the can say about storage? I'm dubious about the assertion that something you can freeze once won't work if you freeze it twice.
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JohnP
Master Marine Consultant

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1520 Posts
Response Posted - 03/22/2010 :  13:52:15  Show Profile
Here's some interesting advice about 2 related products:

*******

"India Spar Varnish is an extra durable, high gloss marine type varnish for all interior or exterior wood...

Keep from freezing. If frozen, allow to thaw at room temperature. Do not apply at temperatures below 50°F."

*******

"Polyurethane
Keep from freezing. If frozen, warm to room temperature and mix thoroughly before use."

******

I think that water-soluble paints and sealants are ruined when frozen, because they are complex mixtures that are made in the factory as emulsions. If they freeze they tend to separate, and the emulsion cannot be re-formed by simple mixing.

On the other hand, one-phase solvent-based (oil-based) paints and sealants, like varnish, are simpler mixtures and are ok if frozen and thawed. If the can was sealed well, and the product is warmed to room temperature, the product can be mixed thoroughly and used again.

But you know all of these things are meant to be stored at room temperature.
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Voyager
Master Marine Consultant

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USA
5371 Posts
Response Posted - 03/22/2010 :  14:46:59  Show Profile
In my experience, oil based paints and coatings usually work fine after freezing, but that's only in my limited experience. Water based paints turn to crap after freezing. I've had them glump up badly when applied and it just doesn't go on very smoothly.

I've kept my can of cetol in the garage for a couple of years. It works just fine.

I did lose a quart of PoliGlow due to a freeze. Actually, two years in the garage. Now I am ready to use it. I called the manufacturer and he told me, once it freezes, it is NG. Of course, he may have wanted to sell me some more stuff.

Not wanting to risk it, I put the old jug away and purchased another one. Hopefully, it was not Fedexed by way of Barrow Alaska!
Edited by - Voyager on 03/22/2010 14:48:16
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danandlu
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175 Posts
Response Posted - 03/22/2010 :  18:01:59  Show Profile  Visit danandlu's Homepage
Thank you Dave, John & Bruce. It should be usable as I suspected. It really doesn't make sense that the first freeze is OK and the subsequent freezes aren't. I guess some "experts" aren't really so expert.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.