Should I Repair or Replace My Deck?
What to look for, what it costs each way, and a straight recommendation based on your deck's actual condition — from a contractor who gives you the honest answer, not the expensive one.
Repair or Replace? Quick Signal Guide
✅ Signs that point to repair
- ✓ Deck is under 12 years old and the frame feels solid underfoot
- ✓ Only a few boards are rotted, cracked, or cupped — frame is sound
- ✓ Posts and beams are firm, no soft spots or significant checking
- ✓ Ledger board is tight against the house with no rot or separation
- ✓ Repair cost is less than 40% of new deck replacement cost
🔴 Signs that point to replace
- ✗ Deck is 20+ years old and showing widespread deterioration
- ✗ Posts are soft, rotted at the base, or visibly leaning
- ✗ Ledger board is separating from the house or showing rot
- ✗ Multiple joists are compromised — soft, cracked, or sagging
- ✗ Deck feels bouncy, springy, or has noticeable flex underfoot
- ✗ Repair quote is more than 50% of a full replacement
- ✗ You want to change the size, layout, or upgrade to composite
Our rule of thumb: If the structural frame is sound, repair almost always makes more financial sense than replacing. If the frame is compromised in multiple places, you're throwing repair money at a structure that will continue to fail.
How to Inspect Your Deck in 10 Minutes
You don't need a contractor to do a basic assessment. Here's what to look for:
1. Walk the deck — feel for flex
A solid deck shouldn't bounce or flex noticeably when you walk across it. Significant movement means joists or beams are compromised. Minor flex near the center of long spans is normal.
2. Check the ledger board
The ledger board is the board that attaches your deck to the house. It's the most critical piece. Look for: gaps between the ledger and house, visible rot or dark staining, flashing that's pulled away or missing. A bad ledger is a collapse risk.
3. Poke the posts
Use a screwdriver to probe the base of each post at ground level. If the screwdriver sinks in easily, the post is rotted internally — a serious structural problem even if the outside looks okay.
4. Look under the deck
Check beams and joists for soft spots, cracking, or discoloration. Look for sagging, missing joist hangers, or areas where wood is in direct contact with soil.
5. Check the decking boards
Isolated rotted or cracked boards are a repair item. If more than 30–40% of the boards are failing, a full board replacement or new deck makes more sense than patching board by board.
Cost Comparison: Repair vs Replace
| Repair Type | Typical Cost Range |
|---|---|
| Replace a few individual boards | $400–$1,200 |
| Full board replacement (frame intact) | $3,000–$8,000 |
| Replace 1–2 posts | $600–$1,500 per post |
| Ledger board repair/replacement | $1,200–$3,500 |
| Sister/reinforce joists (2–4 joists) | $800–$2,500 |
| Structural repairs + new boards | $4,000–$10,000+ |
| New Deck (Replace) | Pressure-Treated Wood | Composite |
|---|---|---|
| 10×12 (small) | $6,500–$10,000 | $12,000–$18,000 |
| 12×16 (standard) | $10,000–$18,000 | $18,000–$28,000 |
| 16×20+ (large) | $18,000–$30,000 | $28,000–$50,000+ |
The Age Factor
Deck age is one of the most useful filters when deciding:
| Deck Age | General Recommendation |
|---|---|
| Under 10 years | Repair unless structural damage is severe |
| 10–15 years | Repair if frame is solid; consider board-only replacement |
| 15–20 years | Get a full structural assessment before investing in repairs |
| 20+ years | Replacement is usually the better investment |
| Unknown age | Inspection required — age unknown = risk unknown |
Common Scenarios: What We Recommend
"My boards are gray and splintery but the deck feels solid"
Repair (board replacement). If the frame passes inspection, replacing the decking boards is a cost-effective way to get 10–15 more years out of your deck. This is one of our most common projects in Metro East.
"The deck bounces when I walk on it"
Get an inspection first. Bounciness usually means joist or beam issues. Depending on how widespread the damage is, this could be a targeted structural repair — or it could mean a full replacement is more economical.
"A few boards are rotted but everything else looks okay"
Repair. Isolated board rot is normal for a wood deck that's 10–15 years old. Replace the affected boards, seal everything, and get back on a 2-year maintenance schedule.
"The deck is pulling away from the house"
Stop using the deck immediately and call for an inspection. Ledger board separation is a serious safety issue. This may be repairable, but it requires immediate professional assessment.
"My deck is 20 years old and I want to add on"
Replace. It rarely makes sense to attach a new addition to a 20-year-old structure. Start fresh, build to current code with a proper permit, and get a deck that will last another 20+ years.
Safety: When to Stop Using Your Deck Now
These are immediate stop-use situations — not "get to it soon," but today:
- Ledger board is visibly separating from the house
- One or more posts are leaning or have soft bases
- Railing posts are loose or wobbly (fall hazard)
- Deck has significant sag or slope in one area
- Deck is bouncy to the point of feeling unsafe underfoot
Deck collapses happen. They're almost always the result of ignored structural warning signs. If you have any doubt about your deck's safety, don't use it until you've had it inspected. All-Pro provides free structural assessments — call or use the form below.
Free Deck Assessment — We'll Tell You Honestly What It Needs
We won't push you toward a rebuild if repair is the right call. Written estimate, honest recommendation, no pressure.