How to Seal Coat a Porch


Outdoor porches provide a quiet place to relax or a fun space to entertain friends and family, but they must be maintained regularly to keep them looking nice. Porches continually are exposed to the elements. Rain and sun will cause the wood to dry out, creating a faded appearance and possibly causing splintering. Sealing the porch annually will protect the wood, ensuring the look and structural integrity of the porch for years to come.

Things You'll Need

  • Broom
  • Deck cleaner
  • Hose
  • Brushes
  • Sprayer
  • Sealer
  • Use a broom to clear the porch of all debris. Apply the porch cleaner according to the manufacturer's instructions. This may involve brushing or spraying on the cleaner. Some cleaners require that the porch first be washed down.

  • Allow the cleaner to soak into the wood, about 10 minutes. Rinse off thoroughly.

  • Leave the porch to dry for at least 48 hours.

  • Open the sealer and stir. Do not shake as this will create air bubbles in the sealer.

  • Apply the sealer to the porch with a paint roller or a sprayer two boards at a time. Apply a thin coat, adding a second layer if necessary, rather than a thick coat all at once.

  • Allow the deck to dry completely before using. The time frame will vary according to the sealer used. Check the product package for specific times.

Tips & Warnings

  • Do not allow deck cleaner or sealer to touch live plants. Cover nearby plants with plastic tarps before working, if necessary.

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