Rotted Deck Joists Sistered Or Replaced With Exterior-Rated Pressure-Treated Lumber.

Epp Foundation Repair prices deck joist repair at $300 to $800 per joist sistered or replaced, depending on joist length, access, and hardware upgrade scope. Full deck joist repair scopes typically fall in the $2,000 to $8,000 range. Pricing reflects the joist count, the ledger condition (which determines whether joist repair is the right scope at all), and the hardware required. Written estimate after on-site inspection reflects your scope.

Look from below the deck with a flashlight and probe each joist with a screwdriver or awl, particularly at the ledger connection, at every joist hanger, and at the joist ends near the support posts. A sound joist resists the probe. A rotted joist accepts the awl easily, often to full depth, and the displaced wood is fibrous and dark. Look for rust-streaked hanger contact, soft spots near the ledger, and any visible movement when you walk on the deck. Epp Foundation Repair does this assessment on every estimate and gives an honest pass-or-fail.

If the ledger board (the horizontal lumber attaching the deck to the house) is failed, joist repair alone is unsafe. The ledger is the primary structural connection, and replacing rotted joists on a failing ledger leaves the homeowner with a deck that can pull away from the house. Epp Foundation Repair's recommendation in that case is a licensed deck builder for a full-deck assessment, not joist work. The honest answer is sometimes "this is not the right repair."

No. Epp Foundation Repair handles the structural joist work and the hardware. Not the deck surface, railings, or stair treads. Replacing deck boards, railings, or stairs is a deck-builder scope, separately priced. Epp coordinates timing with the homeowner if a deck builder is also involved, but the surface work is not in our scope.

Epp Foundation Repair uses GRK RSS 5-inch Climatek-coated or stainless steel structural screws rated for exterior use, Simpson hot-dipped galvanized or stainless joist hangers with exterior-rated fasteners, and pressure-treated.40 ground-contact lumber for any sister or replacement joist. Galvanized hangers from 30 years ago corrode in chronic-wet exterior conditions. The new hardware is sized for the lifetime of the new lumber, not the lifetime of the original hanger.

Yes, and if the deck is more than 25 years old, the homeowner should ask the deck-builder estimate to include full deck replacement as an option alongside joist-only repair. Repairing joists on a deck that is otherwise at end of life often costs more, in the long run, than full replacement. Epp Foundation Repair gives an honest opinion on that during the inspection. If full replacement is the better call, we say so.

A typical residential deck joist repair scope is completed in one to three days on site, depending on joist count, hardware upgrade scope, and access. Larger decks with extensive ledger involvement (which would not be Epp scope) take longer. Epp gives a calendar window in the written estimate.

Let's take the first step toward a healthy home.

A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate. no cost, no pressure.