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How Much Does A Deck Board Replacement Actually Cost?
Your deck boards are starting to look rough. Maybe they're warped, cracked, or starting to rot—and you know it's time to do something about it. Those damaged boards aren't just an eyesore; they're also accidents waiting to happen.So what's it going to cost you? Nationally, professional deck board replacement runs between $15 and $90 per square foot. The wide range depends on your material choice and how complex your project gets. Let's break down your options—DIY versus calling in the pros—so you can make the right choice for your situation and budget.
Why Replace Your Deck Boards?
Wooden decks start strong, but the weather doesn't play favorites. Sun, rain, snow, and constant foot traffic take their toll. Before you know it, those once-beautiful boards are rotting, warping, splintering, or cracking.
Pro Tip: Grab a screwdriver and poke any suspicious-looking boards. If it sinks in easily, that board's got to go. Replacing damaged boards now prevents bigger headaches later—and costs way less than rebuilding your entire deck.
Choosing Materials: Wood vs. Composite
Your material choice will significantly impact the total replacement cost. Here's an average cost comparison:
- Pressure-treated wood is the budget-friendly favorite.
- Cedar or redwood offers better durability and aesthetics, but will be pricier.
- Composite decking, such as Trex or TimberTech, typically costs double that of wood but demands far less maintenance and has a longer lifespan.
| Material Type | Cost per Sq. Ft. | 10x10 Deck | 12x12 Deck | 16x20 Deck | 20x20 Deck |
|---|---|---|---|---|---|
| Pressure Treated Wood | $6–$12 | $600–$1,200 | $864–$1,728 | $1,920–$3,840 | $2,400–$4,800 |
| Cedar | $18–$40 | $1,800–$4,000 | $2,592–$5,760 | $5,760–$12,800 | $7,200–$16,000 |
| Redwood | $30–$40 | $3,000–$4,000 | $4,320–$5,760 | $9,600–$12,800 | $12,000–$16,000 |
| Composite Decking & Advanced PVC | $30–$95 | $3,000–$9,500 | $4,320–$13,680 | $9,600–$30,400 | $12,000–$38,000 |
DIY Deck Board Replacement
Tackling deck boards yourself saves on labor, but you still pay for materials and tools. Here are the main cost buckets for DIY:
- Materials: New boards, proper fasteners, and stain or sealant if you're going with wood.
- Tools: If you don’t already own them, you’ll need a circular saw, power drill, pry bar, and safety gear. Don't have them? You can save money by budgeting for rentals.
- Disposal: Hauling away old boards costs money, even when you do the labor yourself.
- Your Time: DIY saves the hourly labor charge, but remember your time has value too. Replacing boards on a 150–200 square foot deck might take a weekend or two if you’re handy.
A Few Pro Tips
- Start by removing old boards. Pry up nails/screws and pull off each board.
- Once the boards are off, this is your chance to really examine the framing. Press on joists with your thumb—soft spots mean there could be signs of decay. Replace any rotten joists before proceeding.
- Measure twice, cut once. Mark your cuts with a pencil and cut to the desired lengths.
- Install new boards with proper spacing. Be sure to use exterior deck screws, not nails.
- Don't skip the finished work. Apply stain or sealer within 48 hours of installation while the wood is still fresh. This single step can double your deck's lifespan.
Hiring a Professional
A contractor will quote you a price that typically bundles materials, disposal, and labor. According to Angi, the average cost for deck repairs runs about $2,156 and can include deck board replacement, fixing loose steps, and wobbly railings. You can expect to pay $3-45 per square foot in materials for repairs, with labor making up a significant portion of the total cost.The upside? They bring experience, proper tools, and speed. They'll tear out old boards efficiently, install new ones correctly, and handle the mess. Many offer warranties on their work, too. If you're fixing a composite decking deck, look for certified installers—TimberTech registered contractors, for example, come with a Replacement Labor Warranty that protects your investment beyond just the material warranty.Professionals cost more dollars but save time and sweat. If your deck attaches to your house or the job gets complex, they ensure everything meets the code and stays safe.
DIY vs Pro
Here’s a quick side-by-side snapshot of typical costs and factors.
| Category | DIY | Professional |
|---|---|---|
| Materials | You buy everything yourself at retail prices—no markup. | Materials included in the quote. May have a slight markup, but often get better prices than you can. |
| Tools | Must rent or own them. Budget $50–$200 if you lack the basics. | All tools provided. No rental headaches. |
| Labor | Free in dollars—you do the work. But it's your weekend(s). | The average deck repair project runs $2,156 according to Angi. |
| Time | 1–2 weekends for 200–300 sq ft, depending on your skill level. | A professional crew often finishes in a day or two. |
| Disposal | If it's a big project, you’ll have to pay for a dump trailer, plus landfill fees. | Usually included in their quote. |
Common Mistakes & Tips
Whether you DIY or hire out, keep these points in mind:
- Inspect Joists First. Never install new boards over rotten framing. You'll just have to address the issue later.
- Use Proper Fasteners. Don’t use old nails or the wrong screws. Exterior-grade decking screws are a must. They won’t pop out like plain nails, and they resist rust.
- Leave Gaps. Wood moves. Don't butt boards together—leave about 1/8" to 1/4” max for drainage and expansion.
- Seal/Stain New Wood. Even pressure-treated lumber benefits from a good sealer or stain right after installation.
- Match or Blend. If you're only replacing a few boards, try to match the material and color. You might need to stain the entire deck for consistency.
- Don’t Take Shortcuts. Don't patch with plywood or cheap lumber. Use proper decking boards designed for outdoor use.
The Bottom Line
Your total cost for deck boards will depend entirely on the size of your repair area. DIY makes sense if you're handy, have time, and your deck's structure is solid. Professionals are worth the extra cost when you want speed and expertise, or you're dealing with complex layouts or high decks.
Ready to Get Started?
Whether you're planning a DIY weekend project or getting quotes from contractors, you need quality materials that'll stand up to whatever the weather throws at them. The Deck Store has everything you need for your deck board replacement project. From premium composite decking that eliminates maintenance headaches to all the fasteners, stains, and tools that make the job go smoothly. Our composite boards come with industry-leading warranties and the kind of durability that makes the higher upfront cost pay off for years to come.Browse our complete selection of deck boards and materials, or reach out to our team for personalized recommendations based on your specific project. Let's get your deck looking great again—and keep it that way.
