water proofing your wood

Canvas covered foamies (Thrifty Alternatives...)

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Re: water proofing your wood

Postby Hamilton Felix » Tue Jul 09, 2019 1:13 pm

Hey, thanks for all the info!

Well, water definitely beads up instead of soaking in.

I think that Primer I sent my wife for only comes in spray cans. Oh, well.


Yes, “it’s what I have” is familiar. We picked up a gallon of Hunter Green Rustoleum, which as about three quarts more than needed for the trailer frame. So the plywood deck gets some of that. I’m thinking (hoping) that when I build the foamie to set on the trailer, I can paint it a complimentary pale green. Hmmm... now to go see if that “Metal Mist” I bought years ago from an employer surplus auction is really pale green. :thinking:

I am surprised at how much mix the wood soaked up. But if it really preserves any wood that’s structurally adequate for the job, it sure beats buying that ridiculously high priced dark colored treated marine plywood. :thumbsup:
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Re: water proofing your wood

Postby Hamilton Felix » Tue Jul 09, 2019 10:57 pm

Turns out I didn’t have to throw water on it. Tonight’s rain made the waterproofing obvious. :thumbsup:
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Re: water proofing your wood

Postby GPW » Wed Jul 10, 2019 6:28 am

Ham , it was many years ago when I started bowmaking ( bowyer) that I learned the true nature of wood … Wood is essentially many little cellulose tubes weakly glued together … tubes that carry water and nutrients to the leaves …The Mix seals off these tubes , so water and bacteria can no longer get in . And it works on paper products too ( cellulose fibers ) … like paper ,cardboard , chipboard , OSB, particleboard, plywood , and yes even CANVAS too ... Waterproofs all that … And we’ve used it around the house for many years now … Really makes outdoor things last and last … So Cheap too compared to other alternatives … And we KNOW this works … well tested ... :thumbsup:

I’m getting ready to soak some 4” X 4” posts in a bucket of the mix for some time ( a Test) … The intent to waterproof the support posts of a little timberframe entryway cover over our front door . Up until now when we needed to bury posts , we used the NBS ( Nasty black stuff) On the wood to be buried , worked good so far …( not pretty , the bottoms of the posts black )

AS far as I know it all started with Chuck Felton , making cardboard plane models , and gives "the mix" just a casual mention , a couple lines in his explanations on page 3 under Construction tips … waterproofing … http://www.feltondesignanddata.com Naturally we took that information and ran with it !!! :thinking: … Living in a WET climate ( probably like you too ) waterproofing is esential .. :thumbsup:

20 years ago we could buy “floor poly which was a thick yellowish polyurethane that was terrible to use (took forever to harden) but was perfect for the mix and about 20 USD a gallon .. ( CHEAP !!! ) :applause:
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Re: water proofing your wood

Postby scoopburt » Fri Jul 12, 2019 4:27 pm

Answered my own question and sharing... what's the difference. Price difference in my area is Thinner $6/gallon, Mineral Spirits $11/gallon.

Paint Thinner vs Mineral Spirits
• Though mineral spirits are a kind of paint thinner, paint thinners are in general considered more toxic than mineral spirits.

• Mineral spirits have the odor of kerosene though there are more refined spirits without any odor.

• Paint thinners are cheaper than mineral spirits.

• While both perform the work of thinning of paints and cleaning of objects, mineral spirits are known for their ability to work as excellent degreaser to clean machinery and tools.

• Mineral spirits are more refined than paint thinners and have less odors than them.

• Paint thinner evaporates quicker, mineral spirits evaporate more slowly and generally leave a smoother finish.

Helped me hopefully this is useful for someone else. I choose Paint thinner.


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Re: water proofing your wood

Postby GPW » Sat Jul 13, 2019 4:31 am

We tried both , both work for the mix … :thumbsup:
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Re: water proofing your wood

Postby TerryB89 » Mon Sep 23, 2019 4:57 pm

getting ready to start my first build, will Thompsons water seal work for the bottom?
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Re: water proofing your wood

Postby tony.latham » Mon Sep 23, 2019 8:01 pm

Thompsons water seal work for the bottom?


It's wax in solution (and light on the wax, heavy on the thinner). I quit trying to get it to waterproof wood twenty years ago. It's also got formaldehyde in it so you wouldn't want that vaporing into a closed space.

Use The Mix.

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Re: water proofing your wood

Postby TerryB89 » Tue Sep 24, 2019 9:43 am

Thank you Tony, that's all I need to hear.
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