How to Waterproof a New Wood Fence


When Tom Sawyer's aunt wanted to preserve her fence, she had Tom paint it with a coat of whitewash. Today she might have had him use a fencing preservative or water seal product. Although today's pressure treated lumber is more hearty than what Tom's aunt would have used, a coat of waterproof sealant helps preserve the wood's color by preventing water from soaking into the wood like a sponge. A waterproof sealing agent can also help prevent wood from cracking and splitting.

Things You'll Need

  • Liquid sealant
  • Paintbrush
  • Garden sprayer
  • Goggles
  • Protective clothing
  • Gloves
  • Breathing mask
  • Put on protective clothing, goggles, gloves and a breathing mask to protect you from airborne particles of the sealant.

  • Pour the sealant into the reservoir of the garden sprayer and cap it.

  • Pump the sprayer's pressurized spray lever to create pressure within the mechanism.

  • Spray the sealant over the fence, working in even strokes with the grain of the wood.

  • Brush over the fence with a paint brush to work the sealant into the wood.

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