5 Signs Your Deck Needs Repair — and When It's Time to Rebuild

Most deck failures announce themselves months in advance — if you know what to look for. Here are the five signs we check first on every inspection, roughly in order of urgency.

1. Boards that flex or feel soft

A spongy spot underfoot means rot — in the board, or worse, in the joist below it. One soft board is a cheap swap. A soft area means we need to look underneath.

2. Railings that move

Lean on your railing. If it gives, it's not a code problem — it's a fall waiting for a party. Usually the fix is re-anchoring posts to the framing with structural hardware; sometimes the posts themselves have rotted at the base.

3. Rust where it matters

Surface rust on screws is cosmetic. Heavy rust on joist hangers, the ledger bolts, or post bases is structural — that hardware is what holds the deck to the house and the ground.

4. Water staining at the house connection

Dark streaks or soft siding where the deck meets the house point to a ledger flashing failure. This is the most dangerous deck defect — ledger failures are how decks collapse — and it's invisible from above. If your deck is 15+ years old and has never been re-flashed, get it looked at.

5. Movement when you walk

A deck that sways or bounces has a bracing or span problem. It's often fixable with added posts and bracing — and much cheaper before anything shifts out of level.

Repair, re-deck, or rebuild?

Our rule of thumb from inspections: if the damage is in boards and railings, repair. If the surface is done but the frame passes, re-deck. If rot has reached joists, beams, or the ledger, rebuild — chasing structural rot piecemeal costs more within five years. The inspection is free; the verdict is honest either way.