Deck repair covers two very different kinds of problems: boards and hardware you can see, and framing you cannot, and the difference matters because one is usually a weekend fix and the other is a safety issue. This page walks through how to tell which one you are looking at, why the ledger board deserves more attention than anything else on the structure, and when repair stops making sense compared to a rebuild. Chattanooga's rain and heat push both kinds of problems along faster than a drier climate would, which is part of why repair stays one of the most requested services on this site.
Look at what is actually failing before assuming the worst, or assuming it is nothing. A board problem shows up on the surface: a single plank that has gone soft, splintered, or cupped, a few popped fasteners, a railing baluster that has worked loose. Those are visible, contained, and usually fixable in an afternoon without touching anything below the decking surface. A structural problem shows up underneath, in framing you would only see by getting down and looking: a support post that has shifted, a beam that has sagged, joists that flex more than they should when you walk across them, or a ledger board separating from the house. Structural problems do not always announce themselves the way a splintered board does. Sometimes the first sign is a floor that feels slightly bouncier than it used to, easy to write off until you actually get underneath and look.
Individual board replacement handles rot, splintering, cupping, and warping on the decking surface itself, along with railing components and stair treads worn out from years of weather and foot traffic. It is the most common repair call we get, and it is usually straightforward: pull the bad board, check that the joist underneath it is still sound, and fasten a new one in its place with corrosion resistant screws rather than the nails a lot of older decks were originally built with. The catch is that board replacement only counts as a full fix if the framing underneath is actually sound. Swapping a rotted board back onto a joist that is also rotting just buys a year or two before the same spot fails again, so a repair crew worth hiring checks what is under a bad board, not just the board itself. Replacement boards should also match the load rating of what they are replacing, not just the color, since mixing decking types or thicknesses on the same run of framing can leave one section performing differently than the rest under the same weight.
When posts, beams, joists, or footings are the actual source of the movement, rather than a single bad board. Signs include a deck that sways side to side when several people stand on it, a post that has visibly shifted off its footing, wood at ground level that has gone soft or spongy, or gaps that have opened up where the deck meets the house. Structural repair means addressing the support system itself: sistering a cracked joist with a new board bolted alongside it, replacing a rotted post, reinforcing a footing that has settled, or in some cases replacing enough of the frame that the job amounts to a partial rebuild. This is not a same-afternoon fix in most cases, and it is not one to put off, since a structural issue tends to get worse under continued weight and weather, not better on its own.
Because the North American Deck and Railing Association estimates that ledger board connection failures are behind the large majority of deck collapses nationwide, more than any other single cause. The ledger is the framing member bolted to your house that the rest of the deck hangs from, and when it fails, it tends to fail all at once rather than gradually. The American Wood Council's own guidance on the connection is specific: the ledger needs to be attached with half inch bolts or lag screws, never nails alone, since nails resist being pulled straight out of a house's band joist far less than a bolt does, and a deck's occupant load can exceed what nails were ever meant to carry. Flashing matters just as much as the fasteners. Water that gets behind an unflashed or poorly flashed ledger rots the house's band joist from the inside, out of sight, until the connection is far weaker than it looks from the deck side. A wobble at the point where your deck meets your house is never a detail worth waiting on.
Noticing gaps, rust stains, or movement where your deck meets the house? Call (762) 318-1611 for a free inspection before it becomes a bigger problem.
Some signs are obvious, and some are easy to explain away for a season or two longer than you should. Watch for:
Any one of these on its own might be minor. Two or three together, especially anywhere near the ledger or the main support posts, are worth a professional look before the next big cookout.
Age and the extent of the damage decide it more than anything else. A ten or fifteen year old deck with a few bad boards and sound framing is almost always worth repairing. A deck pushing twenty five or thirty years old, built with materials and fastening methods that were standard decades ago but would not pass inspection today, is often a candidate for full replacement even if it looks fine from the yard, since the framing has usually aged out along with the surface. Cost plays a role too. Once repair estimates start creeping close to half of what a new deck would run, replacement usually makes more financial sense, because you are not paying twice to fix the same section of frame. A full rebuild also comes with a fresh warranty on the whole structure, where a repair typically only warranties the specific work done, which is worth factoring in alongside the raw dollar comparison. The deck cost page has real per square foot ranges if you want to compare the two options directly.
For a purely cosmetic board with sound framing underneath, plenty of homeowners do. The parts that trip people up are matching the fastening to current code, since old decks are full of nails where screws or bolts belong now, and knowing what to check on the joist underneath before assuming the new board is the whole fix.
Look for daylight or a visible gap between the ledger and the house, rust streaks running down the siding below it, soft or dark wood right at that connection, or a deck that feels like it shifts slightly right where it meets the house. Any of those is worth a professional look, not a guess.
Usually, as long as the frame is sound. Once framing damage is extensive, repair costs start approaching rebuild costs anyway, at which point a rebuild often makes more sense since you get a full warranty on new work instead of a patchwork of old and new.
There is no fixed age, since a well built, well maintained twenty year old deck can outlast a poorly built five year old one. The extent of rot, fastener condition, and how the original ledger was attached matter more than the number on the calendar.
Yes. Most of the repair calls we get are for decks someone else built, sometimes years before the current owner even bought the house.
Whether it is one bad board or something that feels structurally off, call (762) 318-1611 for a free inspection and a straight answer about what your deck actually needs.