Outlast Q8 Log Oil is a semi-transparent, oil-based preservative stain for log homes, siding, decks and wood roofs, registered with the EPA as a wood preservative (EPA Reg. No. 81819-1).
Its active ingredient, copper 8-quinolinolate, stops wood rot, mold, termites and powder post beetles. It also treats the fresh end cuts and fastener holes in pressure-treated lumber, and for end cuts on a deck there's no wait between building and staining. It goes on dark and lightens as it cures, which takes about two weeks. Spray it with a pump-up sprayer, or brush or roll it, as much as the wood will take, at about 125 to 175 sq ft per gallon. It comes in semi-transparent colors only.