Deck Repair & Replacement in Elgin, IL

Deck repair and replacement starts with an honest look underneath. Many decks around Elgin were built decades ago, and after years of snow, spring rain and humid summers the problems are often hidden: soft wood at the ledger, rot on top of joists under the boards, posts decaying at the base, or footings that were never dug deep enough and have heaved. A deck can look tired but be sound, or look fine on top and be unsafe below. We check both before recommending anything.

Signs a deck needs attention

• Boards that feel soft, spongy or bouncy underfoot
• Railings that move when you push on them
• A gap opening between the deck and the house
• Posts that are cracked, split or dark and soft at the base
• Stairs that wobble or stringers that are rotting near the ground
• Rusted joist hangers, nails or bolts
• A deck that has tilted or dropped at one corner

The ledger comes first

The ledger board, where the deck attaches to the house, is the most important connection on most decks. Older decks were sometimes nailed to the house with no flashing, which lets water rot both the ledger and the home's rim joist. If we find that, we explain the fix: removing boards near the house, replacing damaged wood, adding flashing and through-bolting or lag-screwing the ledger to current practice. If the house framing itself is damaged, that changes the scope, and we tell you before we go on.

Repair or replace?

Angi's 2026 data puts the average deck repair at about $2,250, while replacing a deck averages about $8,000. Repair makes sense when the framing and footings are sound and the damage is limited to boards, railings, a stair or a few joists. Replacement makes more sense when rot has spread through the framing, the ledger and rim joist are badly damaged, the footings are shallow and heaving, or the deck was never built to code in the first place. Sometimes the middle option works: keep a sound frame and replace the decking and railings, often with composite boards.

Tear-out and rebuild

A full replacement means removing the old deck, hauling it away and building a new one from the footings up. Demolition and disposal typically adds about $5 to $15 per square foot, according to both Angi and Fixr. The new deck needs a permit and inspections like any new build, and it is built to today's requirements, including footings below the frost line, which around Chicago is generally 42 inches, and guards and stairs that meet current code.

Before you sell

Home inspectors often flag decks with loose railings, missing flashing, shallow footings or rot. If you are preparing to list, or a buyer's inspection report has called out deck problems, send us the report and we will quote the specific items.