Repairing a rotting wooden dock involves several steps to ensure safety and durability. Here’s a detailed guide to help you through the process:

1. Assess the Damage

– Inspect the Dock: Examine the entire dock to identify areas of rot and determine the extent of the damage. Check both the surface and the support structures.
– Test for Soft Spots: Use a screwdriver or similar tool to test for soft spots in the wood, indicating rot.

2. Gather Materials and Tools

– Materials Needed:
– Pressure-treated wood or marine-grade lumber
– Stainless steel or galvanized screws and bolts
– Wood preservative
– Wood filler or epoxy
– Sandpaper
– Sealant or waterproofing stain

– Tools Needed:
– Hammer
– Screwdriver
– Drill
– Saw (circular or reciprocating)
– Chisel
– Pry bar
– Measuring tape
– Safety gear (gloves, goggles, etc.)

3. Remove Rotten Wood

– Remove Boards: Use a pry bar to carefully remove any rotten boards. Be gentle to avoid damaging adjacent boards that are still in good condition.
– Cut Out Rotten Sections: If only part of a board is rotten, use a saw to cut out the affected section.

4. Treat the Remaining Wood

– Apply Wood Preservative: Treat the remaining wood with a wood preservative to prevent future rot. Ensure thorough coverage, especially on cut ends and any exposed areas.

5. Replace Rotten Sections

– Measure and Cut New Boards: Measure the areas where you removed the rotten wood and cut new boards to fit. Use pressure-treated or marine-grade lumber to ensure durability.
– Attach New Boards: Secure the new boards in place using stainless steel or galvanized screws and bolts, which resist rust and corrosion. Pre-drill holes to prevent splitting.

6. Repair Minor Rot

– Clean and Dry the Area: For minor rot that doesn’t require board replacement, clean out the rotten wood with a chisel and let the area dry completely.
– Apply Wood Filler or Epoxy: Fill the cleaned-out area with wood filler or epoxy, following the manufacturer’s instructions. Allow it to cure fully.
– Sand the Surface: Once the filler or epoxy is cured, sand it smooth to match the surrounding wood.

7. Seal and Protect the Dock

– Sand the Entire Dock: Sand the entire dock surface to remove splinters and rough areas.
– Apply Sealant or Stain: Apply a sealant or waterproofing stain to protect the wood from moisture and UV damage. Follow the product instructions for application and drying times.

8. Regular Maintenance

– Inspect Regularly: Regularly inspect your dock for signs of wear and damage.
– Clean and Reapply Sealant: Clean the dock and reapply sealant or stain every few years to maintain its condition.

By following these steps, you can effectively repair a rotting wooden dock and extend its lifespan. Regular maintenance and using high-quality materials are key to preventing future issues.