What are the solutions to stain lumber for outdoor use, except buying pressure-treated wood? What I want to do is take the old lumber, which is still in good shape, but turned gray because of the weather/rain/etc, sand it, and then stain and re-use for decking. What are those stains/paints/etc. called? So I assume there is something I could stain boards with that would prevent it from rot, mould etc.
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Copper Naphthenate is the stuff I use it looks like a green stain , now o days the % is much lower than in years past so I will apply several coats if in contact with earth but for rails and things not touching earth 1 coat works fine. Edited for correct chemical thanks Jimmy
Ed Beal
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