What causes paint/stain to bubble on an outside deck?

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We had a few bubbles right after staining. Five days later we have more bubbles. Our outside temps are running in the 60′s but last Monday it reached 80 degrees. Does not happen very often where I live.

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  1. woodtick314 says:

    The deck beneath the stain was not properly cleaned. There is old sealer or oil of some kind that is preventing the stain from penetrating the deck. I wouldn’t really worry about it this year, but plan on restaining the decking next year. Find a Sherwin-Williams dealer near you, and get some Stain and Sealer Remover, as well as some Revive. It’s the best product on the market for stripping and cleaning a deck. Let it dry and restain, and it will look great and hold up. Hope this helps.

  2. smokey says:

    you applied it when the ambient temperate was too low. the moisture in the product could not evaporate. when the temperature got warmer the product had already gelled on the surface and the moisture inside the product could not escape causing bubbles.

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