Q: We just cleaned our cedar deck with a product that smells like bleach. We also used a pressure washer (before reading in your column that we probably shouldn’t) and now the deck is gray and fuzzy. We also put on a coating of Thompson’s Water Seal, but it didn’t help. Is there anything we can do now to make the deck look better? –Gary B.

A: Your first step is to remove the gray appearance and the fine fuzzy layer — which is actually wood fiber that’s been torn up by the impact of the high-pressure water. Depending on the severity of the "fuzz," you can do this with a stiff nylon brush, or you may need to actually sand the deck.

If you have to sand it, first make sure the deck is completely dry. Then I would suggest starting with 40- or 50-grit paper and working up to 80- to 100-grit. Don’t go any finer then that, as this will actually smooth out the wood too much and lessen the ability for the finish to penetrate. Depending on the size of your deck, you may want to use an electric random orbit sander, or rent a larger flooring sanding and then use the random orbit to finish up in those areas you can’t get to effectively with the larger machine.

Remove the sawdust with a soft push broom, and then follow with a leaf blower or similar blower to get the wood as clean as possible. Finally, I would recommend a penetrating stain with UV inhibitor that is formulated specifically for decks. Talk to the folks at an experienced paint store for their recommendations (I would typically avoid the home centers for advice on something like this), and be sure to tell them about the Thompson’s, as that may affect the penetration of any new product you apply.

Initially, you will probably need two applications of stain to get the color and protection you want. After this initial treatment, in the future I would maintain the deck with a fresh application of stain every two years.

Q: I very much enjoyed your deck-cleaning article. Do you have any brand-name product recommendations for deck cleaning? –Lee G.

A: Over the years, I’ve had very good success with deck maintenance products from the Wolman company, which are sold at many home centers and paint stores. You can check out their entire product line, along with specific details on what product is used for what application, by visiting their Web site at www.wolman.com.

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