What product should I use to stain and seal a new douglas fir T&G deck?

Anonymous asked 5 years ago

I’m installing 1×4 quarter-sawn Douglas-fir T&G over 16″ spaced front porch floor joists. To get rid of the slick surface I plan to sand the deck with 120 grit to open the pours. Should I back-paint/seal the wood? The porch is covered and faces south. What sealer, stain or finish should I use?

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