how to fix splintered wood deck

3 min read 16-01-2025

A beautiful wood deck is a great addition to any home, providing extra outdoor living space. But over time, exposure to the elements can cause wood to splinter, posing a safety hazard and detracting from its appearance. Fortunately, fixing splintered wood on your deck is a manageable DIY project. This guide will walk you through the process, from assessing the damage to applying a protective finish.

Assessing the Damage and Gathering Supplies

Before you begin, carefully inspect your deck to determine the extent of the splintering. Identify areas with significant splintering, and note if the wood is simply rough or if deeper repairs are needed. For minor splintering, sanding may suffice. More severe damage might require wood filler or even replacing entire boards.

Supplies you'll need:

Safety Glasses: Protect your eyes from flying debris.
Work Gloves: Protect your hands.
Sandpaper (various grits): Start with coarser grit (e.g., 80-grit) for removing splinters, then finer grits (e.g., 120-grit and 220-grit) for smoothing.
Putty Knife or Scraper: To remove loose splinters and debris.
Wood Filler (exterior grade): Choose a color that matches your deck's stain.
Deck Brush or Stiff Brush: To clean the deck surface.
Exterior Wood Sealer or Stain: To protect the repaired areas and enhance the appearance.
Optional: Circular Saw (for replacing damaged boards), Hammer and Nails (for replacing boards).

Step-by-Step Repair Process for Minor Splintering

For minor splintering, sanding is usually sufficient.

1. Cleaning the Surface:

Begin by cleaning the splintered area with a deck brush and water. Remove any dirt, loose debris, and existing loose splinters using a putty knife or scraper. Allow the wood to dry completely before proceeding.

2. Sanding the Splinters:

Start with coarser grit sandpaper (80-grit) to remove the most prominent splinters. Work your way up to finer grits (120-grit and 220-grit) for a progressively smoother finish. Sand with the grain of the wood to avoid further damage.

3. Applying Sealer/Stain:

Once sanded, apply a high-quality exterior wood sealer or stain. This will protect the wood from further damage and enhance its appearance. Follow the manufacturer's instructions for application and drying time.

Addressing More Severe Splintering

If the splintering is severe or the wood is significantly damaged, sanding alone won't be sufficient. You might need to use wood filler or replace the damaged boards.

How to Use Wood Filler:

Clean the area: Thoroughly clean and dry the damaged area.
Apply the filler: Pack the wood filler firmly into the damaged area, slightly overfilling it.
Smooth the filler: Use a putty knife to smooth the filler, ensuring it's level with the surrounding surface.
Allow to dry: Let the filler dry completely according to the manufacturer's instructions.
Sand smooth: Once dry, sand the filler smooth using progressively finer grits of sandpaper.
Seal/Stain: Apply a wood sealer or stain to protect the repaired area.

Replacing Damaged Boards: A More Involved Repair

If a board is severely damaged or rotten, you'll need to replace it. This involves removing the old board and installing a new one of the same dimensions. Consult online tutorials or professional advice for guidance on this process. It's crucial to use exterior-grade lumber for replacements.

Maintaining Your Deck to Prevent Future Splintering

Regular maintenance is key to preventing future splintering.

Regular Cleaning: Clean your deck regularly to remove dirt, debris, and mildew.
Annual Sealing/Staining: Apply a fresh coat of sealer or stain annually to protect the wood from the elements.
Prompt Repairs: Address minor damage promptly to prevent it from escalating into more significant issues.

By following these steps and regularly maintaining your deck, you can keep it looking beautiful and safe for years to come. Remember that safety is paramount. Always wear appropriate safety gear, and don’t hesitate to consult a professional for extensive repairs or if you're unsure about any step.