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 refinishing teak --green hue on the wood		  New Topic  Topic Locked
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SRH_Catalina_Newbie
Deckhand

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11 Posts
Initially Posted - 10/28/2009 :  20:27:09  Show Profile
Refinishing the teak on my 89 Cat25, the boards were pretty weathered and the previous owner used a brass brush to clean the wood. We had to sand the grooves down to make a smooth surface.

After sanding the boards down we noticed a greenish hue on the teak, this was even more pronounced after we applied Step 1 and 2 teak cleaner and brightner.

Has anyone ever seen this before? Is this normal? Any suggestions?
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Sloop Smitten
Master Marine Consultant

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USA
1181 Posts
Response Posted - 10/29/2009 :  08:28:21  Show Profile
Take off your sunglasses!

Just kidding. First thing that comes to mind is some sort of algae or fungus. Take a solution of 25% bleach-75% water and test a non-conspicuous spot. If it goes away it's probably organic. However since it's there after sanding I would expect its more likely just a characteristic of the wood used. If it is, and you plan on using a stain of any sort, it should not be a problem.
Edited by - Sloop Smitten on 10/29/2009 08:31:03
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 10/29/2009 :  10:01:57  Show Profile  Visit delliottg's Homepage
Since it's a green hue, and brass corrodes to a green, I'm guessing you have some staining from corrosion. You might try oxalic acid (look in the pool section of your local Home Depot/Lowes/etc.). Or you can purchase the expensive metal stain removers for woodworkers, but it's just oxalic acid. As mentioned above, try it in a solution on an inconspicuous place, it may well bleach out the stain. It works great on oak that's touched steel (black stains), but I've never tried it on teak & brass, so take this advice with a grain of salt.

If you've got questions on how to apply it, shoot me an email (or respond here), and we'll get it sorted it out.

Remember, this may not work, so try a small area that's not easily seen.
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Happy D
Admiral

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921 Posts
Response Posted - 10/29/2009 :  10:08:53  Show Profile
All of my new teak had a green hue to it. I just put it out in the sun for a few days and it'll fade.
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 10/29/2009 :  10:28:39  Show Profile  Visit delliottg's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">just put it out in the sun for a few days and it'll fade<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Actually, this is probably the wisest course before resorting to chemicals. And it just occurred to me, teak's sawdust is tinged green, so it may be natural.
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SRH_Catalina_Newbie
Deckhand

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11 Posts
Response Posted - 10/30/2009 :  07:45:52  Show Profile
Thanks for your suggestions guys. We tried the oxalic acid and that didn't seem to help so we put two coats of teak oil on and I'm sticking the boards out in the sun. I will log in in a couple of weeks and let you know how that worked out.

Thanks again!
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SRH_Catalina_Newbie
Deckhand

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11 Posts
Response Posted - 03/28/2010 :  19:24:50  Show Profile
Just to finish this off. The green tint did go away after about 2 weeks in the sun. Thanks again!
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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.