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Resealing Bathroom Countertops

Counters are often sealed to protect them against moisture exposure. This is especially true in bathrooms because of the increased humidity caused by bathtubs and showers. The sealed counters are also simpler to clean but the sealant doesn't last forever. Time and wear combine to wear down the sealant on the counter. Reseal the bathroom counter when this happens to restore its former appearance and protect it against damage.
  1. Preparing the Counter

    • Remove any loose items from the counter such as soap dispensers, razors or toothbrush holders so the entire counter surface is free of debris. The counter must be completely clean prior to stripping it so wash it thoroughly with warm water and a mild detergent. Liquid dish soap is useful because it is a degreaser but is still gentle enough that it won’t damage the counter. Likewise, white vinegar is an effective cleaner and disinfectant that helps remove any old stains from mold, soap scum or toothpaste. Lay down a plastic drop cloth around the counter so nothing drips down onto the floor during the stripping process.

    Stripping the Old Sealer

    • While you can apply fresh sealer over an old coat, the counter won't look as good when you're finished because the old sealer is likely faded and possibly stained. The fresh sealer then traps these blemishes into the counter's surface. As a result, it is more effective to remove the old sealer prior to applying a fresh coat. Stripping compounds work differently from each other but they are all corrosive so wear rubber gloves and protective clothing when working with one. The fumes are harmful as well so ventilate the bathroom during the stripping and resealing process. Read the container to verify the stripper is designed for your counter surface and then apply it in accordance with packaging instructions for best results.

    Application of New Sealer

    • Only apply fresh sealer once you completely rinse and dry the counter following the stripping process. Sealers also vary depending on the surfaces they are intended for, so make sure your sealer is appropriate for your counter. For example, a granite counter requires a different sealer than marble. The sealers usually apply in similar fashion, however. The instructions will be on the container but the sealer gets poured onto the counter and then rubbed into the surface with a buffing pad. The sealer may have a milky complexion at first but it clears as it dries. Apply two coats for best results.

    Maintenance

    • Sealers slow the rate of moisture infiltration into the counter but the sealer doesn't prevent it outright. Wipe away any liquid spills as soon as they form to prevent the possibility of the sealer getting penetrated. This is especially true for acidic beverages such as orange juice or soda. The acidity quickly eats the sealer and could leave a permanent stain that requires stripping to remove. It may even damage the counter itself. Reseal the counter every few years to help it look its best. Use coasters if you put a water glass or beverage on the counter to help prevent rings from forming on the counter's surface.