Wood preservative/oil/paint?

[e9999]

I have a trailer with wooden sides. Big burly 2x6s everywhere. Lots of them. The wood is very dry and I should do something to it. Right now it's green and it may well be that this was some sort of wood treatment, but then again it's greener than the old style antirot stuff. Not paint though, more like penetratring dye type of finish.
Anyway, I also want to change the color. I was wondering if I could put oil or some other treatment on it and then paint it or is that not a good idea? Can you do oil paint after after an oil/stain job? Or is oil paint oily enough that it'll penetrate the wood and "rehydrate" the wood?
TIA

 

[KLF]

Is it pressure treated wood?

 

[bogus one]

Is it pressure treated wood?

Yeah, does it have approx. 3/4" "slots" on it at a tapered pattern?

That'll be a big factor in what product you use.

 

[Cookiemonster]

Post a few pics if you can.

 

[e9999]

no, no injection mark to be seen. Probably a good 10 years old. Could be that green antirot stuff they used to have that you could paint on?

 

[Cookiemonster]

If it's CCA (chromated copper arsenate) better known as "copper chromate" it is the same stuff as pressure treated. Use to be sold under Jasco's "Copper Green" "Green Treat," "Wood Preservative" and a few other names. Great stuff. No longer legal, which sucks.

As far as painting the wood preperation is key. They only problem with sanding is you are dealing with arsenic. Take some precautions with hepa vaccuming and at least a NIOSH# N100 or P100 dusk mask. Both protect against arsenic.

I know 3M has them available, and I'm pretty sure AOS Safety does too.

Other than that you should be able to seal it up with a couple coats of a good oil base primer and finish.
Just don't expect any miracles with the paint lasting 10-15yrs before it needs to be dealt with again.

Good luck.

 

[-Spike-]

If it's CCA (chromated copper arsenate) better known as "copper chromate" it is the same stuff as pressure treated. Use to be sold under Jasco's "Copper Green" "Green Treat," "Wood Preservative" and a few other names. Great stuff. No longer legal, which sucks.

Not true, at least here in Az. I see you both live in California though, so 'sucks to be you'. Just bought some to treat some door jamb material.

-Spike

 

[Cookiemonster]

The replacement for copper chromate arsenic was ACC, (acid copper chromate). However this has been banned as a hazzardous waste material also. The latest version (which is no where near as good as the arsenic) is alkaline copper quat, or ACQ (ACQ - An Alternative to CCA | Pesticides | EPA).

Chromated Copper Arsenate (CCA) | Pesticides | US EPA

This stuff really sucks because it eats away at galvanized nails & other fasteners. Specially coated screws are the prefered choice of fasteners for this stuff, and even this stuff eats away at them.

I still have some of the original copper chromate arsenic. It's like asbestos, best stuff in the world you just don't want it in friable form and you don't want to get the arsenic on your hands. I've always worn disposable gloves when using the CCA anyway.

If you have any of the original CCA keep it.

 

[-Spike-]

Yep, here's what I got locally- Product Information Error Page (Ignore the title )

Saw the 'Copper Green' and assumed it was what you were talking about, but research shows it's Copper Napthenate.

-Spike

 

[Cookiemonster]

Ya the copper naphthenate is wicked good stuff. Not sure if that's available in CA, since I still have some of the CCA (arsenic). When they banned & phased it out I piled up a nice little supply which is now down to less than 2 gallons total.

I'll have to look into the Naphthenate when I need to replenish my stock.

 

[45Kevin]

It could be a semi-transparent stain. You can put a solid colour over that if you want.

 

[e9999]

not worried about bugs, more the sun and rain. There is cracking going on.

the paint/stain/stuff on there now is very thin, like a human hair or only a bit more.

Here are a couple of pics - I hope- one showing a spot where the wood chipped off and the thin layer and the other the horizontal deck which is in worse shape.

Guess as to what this is? Maybe just paint?

 

[Cookiemonster]

Looks like paint from the hardened drips. I'm pretty sure. You can see it is a surface material cause it has't soaked into the wood. I could be wrong though.

You can scrap sand and make darn sure you have no dust residue at all otherwise your "new" paint job will be flaking with in a year.

You could carefully pressure wash the initial stuff off, but I prefer scrapping and sanding as you can catch all the chips and crap on drop clothes for disposal. If you pressure wash it will just drive all that crap into the soil surrounding the house and you can damage the wood (pit it) fairly easy with a washer.

Oh and you do get what you pay for in paint. I know there are a few threads on paint floating around. Remember there is only one way to do a proper paint job and it involves labor, labor & more labor.

Now you know why I hate to paint so damn much. Painting is of the devil.

 

[e9999]

oh man...! scraping? sanding? I wasn't planning on that. Just thought I'd put some oil / oil paint on it and be done...

Yikes!