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Bad finish on bebch

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Forum topic by MikeDe posted 09-20-2017 01:50 AM 248 views 0 times favorited 2 replies Add to Favorites Watch
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MikeDe

41 posts in 2473 days


09-20-2017 01:50 AM

I restored a Garden Bench and it came out great
I sandblasted the cast iron sides and back insert
and replaced the wood with White oak. For the
finish I was told to use Watco Teak Oil
When it was finished it looked great.
And the great look lasted until the first rain,
A very light rain, that only got the seat slates wet.
After the rain I checked it and found that seat slats
where all covered something black that looked like mold
that I could not take off, even using a scouring pad.
I thought that I did everything right, planning the wood,
sanding it and applying the teak oil, evidently I screwed
up somewhere.

What did I do wrong ??


2 replies so far

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papadan

3584 posts in 3150 days


#1 posted 09-20-2017 02:16 AM

Sounds like mold, any chance of getting a picture?

View RichInSoMD's profile

RichInSoMD

15 posts in 2104 days


#2 posted 09-21-2017 03:33 PM

I periodically applied Thompson’s water seal on a straight grained cedar handrail and got mold only on the horizontal faces. I used a household cleaner listing lactic acid as the active ingredient to get it off. I recently read that a mixture of white vinegar and hydrogen peroxide is good. The straight grained cedar faces have grain that forms troughs. Maybe that holds water too long.

Maybe the oil does not seal the wood good enough. So, I will be open to a suggestion for another sealer.

-- RichInSoMD

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