john doe asked:
What is the best wood preservative for your deck? I am using #2 pressure treated pine that is 2 years old. I took up the decking and am turning them over and sanding them with 36 and/or 50 grit. I bought a few gallons of TWP (total wood preservative). Is that better then Thomson? I understand it keeps the black mildew at bay that grows on pressure your treated pine that has been out in the sun for while.
GENE
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