Whether a rotted deck in Danville needs a repair or a full rebuild comes down to one question: is the rot in the boards, or is it in the framing underneath?
How do I know if it’s just the boards?
Push a screwdriver into the wood. If it sinks in easily on the surface boards but the joists and posts underneath still feel solid, board replacement alone usually solves it.
Kentucky’s freeze-thaw winters push moisture into any crack in a deck board’s finish, and once rot starts on the surface it does not stay there — it wicks down into whatever the board touches. That is why a deck that looks fine from a few feet away can still have soft, structurally unsound framing directly under a rotted section of decking.
When does it need a full rebuild?
If the screwdriver sinks into a joist, beam, post, or the ledger board where the deck attaches to the house, that is a structural problem, not a cosmetic one, and it typically means a full rebuild rather than a board-by-board patch.
The ledger connection is the single most important thing to check first. A rotted ledger board is the most common cause of a full deck collapse, because it is the connection carrying the deck’s entire weight back to the house.
Typical cost range
Board-only repair typically runs $500–$2,500 depending on how many boards need replacing. A full rebuild on the existing footprint runs the same as new construction — $25–$45 per sq ft for pressure-treated wood, $45–$70 per sq ft for composite — labeled typical and confirmed with a written quote before work starts.
Frequently asked questions
Can I just replace the rotted boards myself?
If the framing underneath is sound, yes — that’s a straightforward repair. The risk is assuming the framing is fine without actually checking it, since surface rot often hides deeper problems.
Does composite decking rot the same way?
No, composite boards don’t rot, but the wood framing underneath a composite deck still can, so the same ledger and joist checks apply even on a composite deck.
Is a rotted deck safe to use while I decide?
Not if the rot has reached the framing. Stay off it and keep furniture and grills off it until it’s inspected — a soft joist can fail suddenly under load with no warning.
The American Wood Council’s DCA 6 prescriptive deck guide covers ledger attachment and framing requirements in detail.
Last updated: September 13, 2026
See our full deck repair service, or check the ledger board attachment guide for how that connection is supposed to work.