Black Rot Spot on Teak Bulkhead Repair - SailNet Community
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post #1 of 12 Old 03-25-2010 Thread Starter
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Black Rot Spot on Teak Bulkhead Repair

After being away from the boat for a few months we recently noticed a black rot spot (about 6" x 15" oval) on our teak bulkhead. We tracked the leak down and repaired but are left with the ugly spot. Structural integrity is not an issue but seeking any ideas on addressing the spot. The bulkhead is 3/4" ply with teak veneer that has been rotted out. Has anyone been faced with similar challenge on repair? All ideas are appreciated. Thanks

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post #2 of 12 Old 03-25-2010
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Is the wood rotten or is it just mold/mildew staining it? If the wood is actually rotten, then it should be replaced. If it is just stained, try using oxalic acid on it to bleach it.

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post #3 of 12 Old 03-25-2010
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Find a nice picture of your boat at least 6 x 15, frame and apply.

This assumes that you have stabilised the rot.
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post #4 of 12 Old 03-31-2010 Thread Starter
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Thx guys. Ill try the oxalic acid first.
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post #5 of 12 Old 04-17-2010
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try ajax first it also has oxialic acid in it but a lesser amount so is easier to control and clean up
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post #6 of 12 Old 04-18-2010
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Failing acid, try "Snappy Nu-Teak"...i have had good luck with this 2-part 2-step bleach.
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post #7 of 12 Old 04-20-2010
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That or Teaka A&B.

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The Landing at Colony Wharf
Bellingham, WA.

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post #8 of 12 Old 09-23-2014
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Re: Black Rot Spot on Teak Bulkhead Repair

Ive heard that white vinegar and little baking soda may work.... at least you wont hurt anything trying something that simple..

As I cast off for that very first time,
The "rope" in my hand has now become "line".
And hauling the sails to the top of the mast,
That "rope", now a "halyard" holds strong, taught and fast.
Then sailing in brisk winds full force on a beat.
The sails are trimmed in by that "rope" that's a "sheet".
And now at my anchorage with sails safely stowed,
I trust in that "rope" that now serves as a "rode".
Through all my life I will never lose hope,
Of a reason or time to play with a rope.
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post #9 of 12 Old 09-23-2014
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Re: Black Rot Spot on Teak Bulkhead Repair

Id suggest first before bleaching that you attempt to kill any 'intruded' fungal by soaking/dissolving with TriSodiumPhosphate - TSP solution, then follow up with 'bleaching'

That you have a 'black spot' usually means that the fungal species are already IN the wood cells and the filamentous growth of the fungals are taking up residence .... only to cause 'dry rot' in the long term future.

Another approach to kill/stun the deep fungals is to repetitively apply a TIN base anti-fungal compound such as a 'non-staining' athletes foot remedy, ..... then 'bleach' or 'tint' back to the surrounding color.

All this above is 'chancy', as the best is always to cut out and replace for 'surety' sake and you then wont have to do this 'twice'.
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post #10 of 12 Old 09-24-2014
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Re: Black Rot Spot on Teak Bulkhead Repair

ZOMBIE THREAD ALERT!

2010 THREAD The bulkhead is either fixed or rotted totally.
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