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I decided to restain my deck last week since it was looking pretty worn after a New England winter. The deck is only 1 year old since we bought new construction. I contacted the builder and purchased a can of the same stain they used: Cabot's Mahogany Flame oil based stain. The week before had been sunny and dry. For prep I powerwashed the deck and then waited 24 hours to apply the stain. It's been a week, with warm and dry weather and parts of the deck still look wet and are tacky and sticky to the touch. How can I fix this? Also, what is the proper way to prep a deck before staining?

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I would contact the manufacturer of the stain to get their opinion. The stain may have reacted with something that was on the deck, or may just have been old. –  electricsauce Jun 11 '11 at 15:00

3 Answers 3

When ever I prep a deck for restaining, I clean it with a mixture of TSP, bleach and water. I apply the mixture, scrub it with a stiff broom and rinse it well with water or a power washer. Let it dry well, then apply stain. The cleaning solution helps remove the dirt, grime, spills, etc. Pretty basic stuff, I admit.

As far as why your stain doesn't want to dry. There may be several reasons for this. First thing that comes to mind is that the stain may have not been mixed well before application. The solvents and drying agents can separate from the oils and pigments in stain. The oil tends to stay at the top of the can, and the oil won't dry well without the solvents mixed in.

Another reason may be other sealers, grease or spills that have sealed the skin of the wood, not allowing the stain to penetrate.

Sometimes, one can get a little carried away and apply way too much product. This will saturate the wood and the access will sit on the top of the surface.

If after a couple weeks of good drying weather, you still have sticky or tacky spots, I'd be tempted to remove this excess with a cloth wetted with mineral spirits. This should thin the sticky stain, remove some and distribute it to help it dry.

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It soundless like the previous layer of stain was not ready for re-stain. That is why the new stain is not drying.

It will eventually dry (maybe a month) but you will be unable to use deck in meantime. oops.

Next time try a water-test to see if stain is actually absorbing or repelling water. If water beads-up on it still you cannot stain yet.

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I have used Behr Oil based stain for the first 5 years on a flight of stairs outside and 3 decks and an entry area on my home. It always dried within 4 hours. 6th year I thought I'd try another brand and two weeks later still sticky. They tried to tell me I was suppose to strip my decks every year. Whatever defective product. I purchased another gallon of Behr went over the other product and it dried in 4 hours. now in year 10 Behr has discontinued their oil base at home depot in the redwood. I was forced to buy yet another brand. It was suppose to dry in 24hrs. Well that was 5 days ago with the temps here in the 80's and dry. Still tacky better then the other brand that would not dry. I personally think it is the manufacturers. I stain my decks and stairs every year. We get a lot of rain here and I like to keep things I own in top shape. Behr brand is thicker and tends to go on more like a paint. I am very dissapointed that Behr decided not to continue this product. If you are listening Behr please bring it back. If this doesn't dry they do have a clear oil base stain that I will be forced to put over this last brand.

If your brand does not dry try the Behr brand. Put it right over the top. It will seal it and dry.

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