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Moldy Redwood Picnic Tables Fix

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Forum topic by katilicous posted 01-28-2016 03:35 AM 656 views 0 times favorited 22 replies Add to Favorites Watch
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katilicous

36 posts in 1867 days


01-28-2016 03:35 AM

Topic tags/keywords: picnic tables mold finish waterseal outdoor patio redwood table

I built 8 picnic tables for my HOA where I live and think I messed up on putting some penetration oil on them too soon after putting on some Thompsons Waterseal if I was supposed to put it on at all. It’s pretty damp at night where they sit and they get a fair amount of moisture from the sprinkler mist and sea winds. The tables are 6 months old and I don’t want to leave them on their current course bc they are looking pretty blackened.
Does anyone have a suggestion on how to clean the mold up and protect them without using a clear coat. I know greyin is to be expected but this is like a molding and I don’t think it’s nice to have.
Should I sand them down and then put something else on them?
Thanks for any help.

-- If you fall, I'll be there. -Floor


22 replies so far

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katilicous

36 posts in 1867 days


#1 posted 01-28-2016 03:39 AM

-- If you fall, I'll be there. -Floor

View Aj2's profile

Aj2

689 posts in 1261 days


#2 posted 01-28-2016 04:14 AM

I doubt there anything you can do.Should have left them natural Thompson water will do nothing but separate you from your money. Wood doesn’t need protection for the elements it’s a tree trees grow outdoors.
Now sometimes wood needs protection from humans.Esp beer drinking ruffians.Banging beer mugs down on the poor table. Sorry for not helping

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katilicous

36 posts in 1867 days


#3 posted 01-28-2016 05:03 AM

How do you mean it will separate u from ur money? Please ‘splain thanks.

-- If you fall, I'll be there. -Floor

View playingwithmywood's profile

playingwithmywood

247 posts in 1060 days


#4 posted 01-28-2016 05:14 AM

I would think you could sand to bare wood and then reseal

View BurlyBob's profile

BurlyBob

3674 posts in 1728 days


#5 posted 01-28-2016 05:49 AM

I’m thinking bleach and sanding.

View playingwithmywood's profile

playingwithmywood

247 posts in 1060 days


#6 posted 01-28-2016 07:02 AM



I m thinking bleach and sanding.

- BurlyBob

bleaching is probably a good idea also

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katilicous

36 posts in 1867 days


#7 posted 01-28-2016 04:52 PM

So then, that’s what that wood bleach is for or should I use a liquid Clorox? Is that OK on a picnic table? We don’t have many kids here but we got lots of pets.

-- If you fall, I'll be there. -Floor

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katilicous

36 posts in 1867 days


#8 posted 01-28-2016 04:53 PM

Thanks, appreciate the wisdom always

-- If you fall, I'll be there. -Floor

View dhazelton's profile

dhazelton

2324 posts in 1759 days


#9 posted 01-28-2016 05:26 PM

You can use regular clorox and maybe some dish soap with a stiff brush, but were clothes you don’t care about and the fumes might be nasty. If you have a small pressure washer you can use a mold and mildew killer for fences and decks, that doesn’t smell as bad.

I would suggest that your penetrating oil just sat on top. Thompsons is basically mineral spirits and paraffin. The tables also need to sit where they can dry out after a rain.

View Bill White's profile

Bill White

4451 posts in 3423 days


#10 posted 01-28-2016 06:28 PM

Use oxalic acid. Readily available. Spray it on, wait a while, rinse with a soapy solution to neutralize, brush, rinse, dry, forget any top coat ‘cause it’ll just go bad in a short time.
Bill

-- bill@magraphics.us

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tomsteve

394 posts in 682 days


#11 posted 01-28-2016 07:04 PM

BE CAREFUL WITH CHLORINE BLEACH ON WOOD
yup, kills the mold and algea great.
HOWEVER
bleach breaks down wood fibers and corrodes metal fasteners. it is next to impossible to completely rinse bleach off of wood as it gets into the fibers. the bleach dries, then when rewetted it reactivates chewing away at the wood fibers again.

look into using sodium percarbonate.

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tomsteve

394 posts in 682 days


#12 posted 01-28-2016 07:04 PM



Use oxalic acid. Readily available. Spray it on, wait a while, rinse with a soapy solution to neutralize, brush, rinse, dry, forget any top coat cause it ll just go bad in a short time.
Bill

- Bill White

or this

View Yonak's profile

Yonak

979 posts in 984 days


#13 posted 01-28-2016 07:10 PM

Probably the best thing you can do is to get them out of the moisture and let them dry out real good before you refinish them. A good paint and covering when not in use is probably still the best protection against the elements.

View conifur's profile

conifur

955 posts in 614 days


#14 posted 01-28-2016 07:18 PM

@Aj2> Wood doesn’t need protection for the elements it’s a tree trees grow outdoors.
Words of wisdom? but a tree has bark on it!!!

-- Knowledge and experience equals Wisdom, Michael Frankowski

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Aj2

689 posts in 1261 days


#15 posted 01-28-2016 11:26 PM

Ha Conifer,The bark is to protect the tree from humans.:)
Bleach oh boy I give up.Carry on without me.

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