Deck posts are the foundation of any sturdy deck, providing crucial support for the structure. Over time, these posts can begin to rot due to constant exposure to moisture and the elements. Rotting deck posts compromise the safety of your deck, but they don’t always need to be replaced right away. In this guide, we’ll walk through how to repair rotting deck posts, keeping them strong, safe, and lasting for years. This guide will also help you understand repair options, costs, and techniques to protect your deck from future rot.
Can a Rotted Deck Post Be Repaired?
Yes, rotted deck posts can often be repaired. The extent of the rot will determine if the post can be restored or if it needs to be replaced. Minor rot can be addressed with fillers and hardeners, but if the rot has spread extensively, it may be more practical and safe to replace the post entirely. Regular inspection can catch early signs of rot, allowing for quicker repairs and potentially extending the life of the post without needing a complete replacement.
Signs of Rot to Watch For:
- Soft or spongy wood
- Cracks or splits in the wood
- Discoloration, especially darker or reddish spots
- Mold or fungus growth
- Wood crumbling when touched or probed
If you notice these signs, assess the extent of the rot before deciding on a repair approach. Small areas of rot can often be treated, while larger affected areas may require a replacement.
Also Read: How to Install Balustrade Posts
How to Repair a Rotting Wood Post Without Replacing It
When rot is caught early, it’s possible to repair the post without a full replacement. Here’s a step-by-step guide to help you repair a rotting wood post and restore its strength.
Step 1: Gather the Right Tools and Materials
Before starting the repair, gather all necessary tools and materials to make the job easier. You’ll need:
- Chisel or screwdriver
- Wood hardener
- Exterior-grade wood filler or epoxy
- Paintbrush or applicator
- Sandpaper
- Paint or sealant for outdoor wood
Step 2: Assess and Remove Rotted Wood
Use a chisel or screwdriver to gently remove any rotted wood from the post. Carefully chip away all soft, damaged areas until you reach solid wood. This will give you a good base to build on and ensure no rot remains that could spread further.
Step 3: Apply Wood Hardener
After removing the rotted wood, treat the affected area with a wood hardener. This product strengthens and stabilizes the remaining wood, making it easier to repair. Apply the hardener according to the manufacturer’s instructions, and allow it to dry fully before moving to the next step.
Step 4: Fill the Area with Wood Filler or Epoxy
Once the wood hardener is dry, use an exterior-grade wood filler or epoxy to fill the gaps left by the removed rot. Apply it carefully with a putty knife, filling in the space and smoothing it out to blend with the surrounding wood. Let the filler or epoxy dry completely before proceeding.
Step 5: Sand and Shape the Area
When the filler has dried, use sandpaper to smooth the repaired area and shape it to match the rest of the post. This will help the repair blend seamlessly, so the post looks as good as new. Sanding also prepares the surface for painting or sealing.
Step 6: Apply Paint or Sealant
Finally, protect the repaired post with a coat of paint or a waterproof sealant made for outdoor wood. A high-quality sealant or paint will help prevent future rot by protecting the wood from moisture and UV exposure.
How Much Does It Cost to Replace a Rotted Deck Post?
Replacing a rotted deck post can be more costly than repairing it, but it may be necessary for severe cases of rot. The costs will vary depending on factors like material, labor, and location. Here’s a breakdown of what you might expect:
Cost Breakdown
- Replacement Wood Post: The price of a wood post varies based on the type of wood. For instance, pressure-treated wood posts typically cost $10 to $30, while more durable options like cedar or redwood can range from $25 to $50 per post.
- Tools and Materials: If you’re doing the replacement yourself, you may need additional tools like a post hole digger, concrete mix, and screws, which can add another $20 to $50.
- Professional Labor: Hiring a professional to replace the post will add labor costs, typically between $100 to $300 per post, depending on the job’s complexity and local rates.
Overall, DIY replacement costs might range from $30 to $100, while hiring a professional can bring the cost up to around $150 to $400 per post. If you have multiple posts to replace, some contractors offer discounts for larger projects.
Also Read: How to Repair Rotting Deck Stair Stringer
Conclusion
Repairing rotting deck posts is a manageable DIY project if the rot is minimal and addressed early. By following the steps outlined in this guide, you can repair your deck post and restore its strength and durability. However, if the damage is extensive, replacing the post may be a safer option. Taking preventive measures, such as applying a protective sealant and inspecting your deck regularly, can help keep your deck posts strong and beautiful for years to come. Remember, the earlier you catch and repair signs of rot, the easier and more affordable it will be to maintain your deck’s safety and appeal.
