A Woodbridge deck repair typically runs $200 to $500 for a handful of boards, or $25 to $45 per square foot to resurface the whole surface. A soft ledger board or rotted joists mean the frame itself is the problem, and usually call for a full rebuild instead of a patch.
A lot of Woodbridge decks are original to the home — which means a meaningful share of them are now 20 to 40 years old, well past the point where a wood deck's surface boards are expected to still be in good shape. That doesn't mean the whole deck is done. It means the first real question isn't "what does deck repair cost," it's what's actually failed — the boards, or the frame underneath them? That's the difference between a $300 afternoon and a full rebuild, and it's checkable in about ten minutes before anyone quotes you a price.
How long a wood deck actually lasts, board by board
Deck boards and the frame underneath them don't wear out on the same schedule. A well-maintained pressure-treated deck surface typically holds up 15–20 years before boards start cracking, cupping, or splintering — less if it hasn't been cleaned and sealed regularly. The joists and beams underneath, if properly built with drainage and airflow, usually last longer: 20–30 years is normal for the structural frame, since it isn't taking direct sun and foot traffic the way the surface is. Practically, that means a 25-year-old Woodbridge deck with tired-looking boards can still have a completely sound frame underneath — worth checking before assuming the whole thing needs to come down.
The test that actually tells you which one you need
Press the tip of a flathead screwdriver firmly into the wood at a few spots — the deck boards, the joists you can see from underneath, the ledger board where the deck meets the house, and the posts near ground level. Healthy wood resists. If the screwdriver sinks in more than about a quarter inch without real force, that wood has broken down and needs to be dealt with, not just resurfaced.
- Boards are cracked, splintering, or soft, but the frame underneath resists the screwdriver test — that's a board-level repair or resurfacing job. Keep the frame, replace the walking surface.
- Moderate softness at the top edge of a joist, where it's lost roughly a quarter to a third of its depth — this is usually fixable by sistering: bolting a new full-length joist alongside the damaged one so the new one carries the load. It doesn't require tearing out the deck surface above it in every case, but it's a job for someone who can assess the load path, not a DIY afternoon.
- The ledger board — where the deck bolts into the house — shows rot or the screwdriver sinks in easily — this is the one spot that almost never gets a patch repair. A compromised ledger board is a structural attachment to your house, and it typically means a full rebuild of the deck's frame, not just that one board.
What board-level repair and resurfacing actually cost
- A handful of cracked or rotted boards: roughly $200–$500 total for the job, mostly labour — individual deck boards themselves run about $10–$35 each depending on material.
- Full resurfacing — replacing every board, railing, and stair tread while keeping a sound frame — runs roughly $25–$45 per square foot in Ontario, which is typically close to half the cost of a full rebuild for the same size deck. This is the right call when the screwdriver test comes back clean on the frame but the surface is genuinely done.
What pushes it into a full rebuild
Full deck construction or replacement in the GTA runs roughly $30–$45 per square foot installed for pressure-treated wood, $45–$70 for capped composite, and $55–$85 for PVC decking — so a typical 12×12 (144 sq ft) deck lands around $5,500–$9,000 in pressure-treated lumber, or well into five figures in composite or PVC. A widely used rule of thumb: if the structural repairs needed add up to more than roughly a quarter of what a full replacement would cost, replacement is usually the better long-term spend rather than repairing a frame piece by piece over several seasons.
Do you need a permit to fix boards on an existing deck
In the City of Vaughan, a building permit is required for new construction of, or an addition or alteration to, a deck that's 600mm (about 23.5 inches) or more above grade, 18.6 square metres (200 sq ft) or larger, or attached to the house — and any deck attached to the house needs a permit regardless of height or size. Straight replacement of worn boards on an existing, already-built deck is generally maintenance, not new construction or an alteration, so it typically doesn't trigger a new permit on its own. Where that changes is structural work: sistering joists, replacing the ledger board, or altering the deck's footprint or railings crosses into "alteration" territory, and for a deck that already required a permit when it was built, it's worth a quick call to Vaughan's Building Standards department before starting rather than assuming a repair stays exempt. If your deck does need a permit — for an attached deck addition, the 2026 fee is $515 or the maximum building permit fee, whichever is less.
Quick answers
How much does it cost to repair deck boards in Woodbridge?
A handful of cracked or rotted boards typically costs $200 to $500 total, mostly labour, since individual boards run about $10 to $35 each. Full resurfacing — replacing every board while keeping a sound frame — runs roughly $25 to $45 per square foot.
How do I know if my deck needs a repair or a full rebuild?
Press a flathead screwdriver into the boards, joists, ledger board, and posts. If it sinks in more than about a quarter inch without force, that wood has broken down. A soft ledger board almost always means a full rebuild, not a patch.
How much does a full deck rebuild cost in Vaughan?
Full deck construction runs roughly $30 to $45 per square foot for pressure-treated wood, $45 to $70 for capped composite, and $55 to $85 for PVC decking — so a typical 12x12 deck lands around $5,500 to $9,000 in pressure-treated lumber.
Do I need a building permit to replace deck boards in Vaughan?
Straight replacement of worn boards on an existing deck is generally maintenance and doesn't need a new permit. Sistering joists, replacing the ledger board, or altering the deck's footprint or railings does cross into permit territory — the 2026 fee for an attached deck addition is $515 or less.
Who can I call for deck repair in Woodbridge?
Rhodex can send a vetted craftsman; request a quote at rhodex.ca/get-a-quote.html. Ask that the quote name whether the frame passed a screwdriver test before assuming it's just a boards-only repair.
Repair or replace, decided plainly
Check the frame before you decide anything about the boards. A screwdriver test that comes back clean on the joists, posts, and ledger means you're looking at a repair or resurfacing job — a few hundred dollars for a handful of boards, or roughly half the cost of a rebuild if you're doing the whole surface. A soft ledger board or badly compromised joists mean the frame is the actual problem, and no amount of new decking on top of it will fix that for long.
Related reading
- More home repair guides for Woodbridge
- Fence Board or Panel Repair vs. Full Replacement in Woodbridge
- Gutter & Eavestrough Repair Cost in Woodbridge (Not Replacement)
- Concrete Crack and Walkway Repair Cost in Woodbridge
- Handyman Hourly Rates in Newmarket: What's Normal, and What's Overpriced
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