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Cost to re-deck an existing frame — new boards and railing, same structure.
With these inputs:
| Result | Value |
|---|---|
| Estimated resurfacing cost | $5,062 – $9,119 |
| Per square foot | $26 – $47 |
| Full rebuild would be | $9,216 – $13,440 |
| You save roughly | 37% |
| New decking boards | $1,632 – $2,688 |
| Hidden fastener clips | $307 – $538 |
| Tear-off and disposal of the old surface | $269 – $538 |
| Railing — 40 linear ft | $1,040 – $1,920 |
| 2 joists repaired or sistered | $110 – $260 |
| Labour | $1,704 – $3,176 |
Resurfacing only pays if the frame is genuinely sound. Before committing, probe the ledger and the post bases with a screwdriver, check the joist tops for soft spots where water sat under the old boards, and confirm the joist spacing suits the new material — most composites need 16 inches on centre and 12 on the diagonal, so an older deck framed at 24 inches has to be re-joisted anyway. Ranges are national estimates; the joist repair line is the one most likely to grow once the old decking is off.
If the frame is sound, resurfacing gets you a new deck for roughly half the price of a rebuild. You keep the joists, beam, posts and footings, and replace the decking, the fasteners and usually the railing. This prices that job and shows what you save against tearing the whole thing out.
Resurfacing usually runs 35 to 55 percent less because the expensive structural work — footings, posts, beam and ledger — stays put. On a 192 square foot deck in composite, resurfacing typically lands around $5,500 to $9,500 against $9,200 to $13,400 for a full rebuild. The saving disappears if the frame turns out to need more than a couple of sistered joists.
Only if the spacing and condition suit it. Nearly every composite brand requires joists at 16 inches on centre for straight boards and 12 for diagonal, so a deck framed at 24 inches needs extra joists added before the new boards go down. The joist tops also need to be flat and sound — composite telegraphs every dip in the frame underneath it.
For a typical 200 square foot deck, a contractor takes two to four days: a day to strip and inspect, a day or two to lay the new boards, and a day for railing and trim. DIY realistically takes two weekends. The variable is what the tear-off reveals — a rotten ledger or several bad joists adds days and changes the job into a partial rebuild.
Push a screwdriver into the posts at ground level, the ledger where it meets the house, and the joist ends — sound wood resists, rotten wood gives. Look for rust streaks at the hangers, and for any joist that has dropped out of plane. If the ledger is not flashed or the posts sit directly in soil, treat the frame as suspect regardless of how the surface looks.
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