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TomHaven12
04-24-2005, 03:59 PM
I am about ready to paint the inside of my cedar planked, oak framed, Haven 12 1/2. It will be sailed in inland lake fresh water. I am looking for recommendations on what to use as a wood preservative before painting. It has a coat of CPES which has since been lightly sanded. I know that in the old days Cuprinol was used, but I don't think it's the same product today. I'm incline to think more CPES, then Kerby's white primer, then semi-gloss paint. What say you?
ssor
04-24-2005, 04:12 PM
Cuprinol is a poisonous looking green copper based wood preservative that has to be applied to bare wood so that it can soak in. It will bleed through latex paint but a couple of coats of alkyd cover it ok.
As far as I can tell it hasn't changed in thirty years. Except in ownership of the name.
TomHaven12
04-26-2005, 03:17 PM
Normally I would do a "search" of this forum and get plenty of good advice on a subject like this, but the search function doesn't seem to be working. How about some replies? smile.gif Please!
Dan McCosh
04-26-2005, 04:06 PM
The CPES would probably prevent almost any wood preservative from soaking into the wood.
ssor
04-26-2005, 07:11 PM
I have a jug of copper napthinate and read the application instructions, "Apply a soaking coat, if flooding is not posible, wait at least 1 hour and apply a second coat allowing it to soak into the wood. Wait at least 24 hours before painting. All sap wood should be completely penetrated. With CPES in place do you suppose that you can achieve these requirements? I should think that you're best choice now is to endeavor as completely water proof a coating as you can achieve.
seayou77
04-26-2005, 07:49 PM
What SSOR said, CPES is a one way ticket.
TomHaven12
04-26-2005, 09:38 PM
In that case, I'll apply another coat of CPES. Will this be as effective against rot as other methods?

Thanks for the replies.

Tom
imported_Dutch
04-26-2005, 10:06 PM
until the cpes is breached then you have no protection other than the inherent durability of the lumber you used
Bruce Hooke
04-26-2005, 10:33 PM
I suspect the best "preservatives" are good materials, good ventilation and good maintenance...