I have a 20 year old deck that's been peeling several years. Last year I lightly sanded and applied Thompson's Waterseal which started peeling after the first snow. I think it originally had a latex stain, but it was applied before I moved in. This year I applied NaOH and sanded but some stain is still left. Should I reapply an acrylic stain or switch to an oil base. I live in Ohio and the deck has no cover, so it gets full exposure. exposure. Thanks for the help
Make sue to remove all of the old stain for best results. Once removed you should go with an oil based penetrating stain such as Armstrong Clark.