How to Repair a Rotted Deck

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Dry rot is a fungus that results in mildew, mold and staining, making a deck appear unappealing and rickety. Microorganisms remove cellulose from deck timber and leave it susceptible to brittleness. Heat and moisture only worsen dry rot by making the wood expand. Repair a rotted deck by investing in replacement deck boards and preventative wood sealer.

Things You'll Need

  • Nail puller
  • Hammer
  • Pry bar
  • Deck boards
  • Nails
  • Circular saw
  • Deck board ties
  • Wood preservative
  • Wood sealer
  • Garden sprayer
  • Long-handle brush
  • Chalk
  • Dismantle the deck's edges, using a pry bar. Remove the deck piece-by-piece by pulling up nails with a nail puller. Strike the puller with a hammer to add pressure to the puller.

  • Cut a section of new deck board long enough to be applied to the first row of boards, using a circular saw, and fill the next row with the remaining board pieces. Complete the second row with a portion of the last board used on the first row. Repeat this process for the following rows. Situate the deck ends so that they meet directly at the center of the joist.

  • Secure all deck boards to the joist with nails and a hammer. Fasten the inside, remaining boards with deck board ties. Nail the ties down to the edges of each board. Toenail, or drive the plank nails in at an angle, through each plank's outside edge and into the joists.

  • Apply one to two layers of wood preservatives to the cut ends of the deck, using a long-handle brush.

  • Trim the deck's ends once all of the boards are firmly in place, using a circular saw. Line the ends with chalk to make a straighter cut.

  • Apply one to two coats of wood sealer to on the entire deck to protect it from weathering and dry rot. Pour the sealer into a garden sprayer and hold the sprayer 1 foot from the deck's surface. Saturate the wood in back-and-forth motion. Work the sealer into the wood with the long-handled brush. Allow the deck to dry for 24 hours.

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References

  • Photo Credit Deck de madeira image by CarlosNeto from Fotolia.com
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