Should I resurface my old deck with new boards or tear it down and rebuild?

What resurfacing means

Resurfacing keeps the structure, meaning the footings, posts, beams, joists and ledger, and replaces everything you see: decking, stairs treads, railing and fascia. Done on a good frame it gets you a new deck for a fraction of the disruption, because there is no demolition of structure, no new footings and often no change to the permit status. It is also the greener path; the frame is where most of the lumber is.

The catch is that the frame has to deserve it. Resurfacing a frame that is partly rotted, under-connected or spaced too wide for the new boards just hides the problem under expensive material.

How we evaluate the frame

We start by pulling boards at the ledger, at a post, at a stair and at the outer rim. Then we probe with an awl: joist tops under the old board gaps, joist ends at hangers, the ledger face and the wall behind it, post bases, beam ends and stringer bottoms. Sound wood resists; rotted wood takes the point with little effort. We look at every connector for rust and at the ledger for bolts and flashing, and we check that the frame is level and that the joists are not badly crowned, since stiff new boards telegraph humps.

Then we compare the joist spacing to the new decking. Most old wood decks were framed at 24 inches, and composite needs 16 or 12. Adding a joist between each existing one is routine if the beams and hangers can take it. The balcony we rebuilt in North County is the cautionary tale: the railing was the visible problem, but once the decking came up the joist ends and ledger area were far worse than they looked from below. The owner had the full picture before the work started, which is the point of this step.

Signs that favor resurfacing

• Frame probes sound at the ledger, joist ends, post bases and stringers.
• The ledger is bolted into framing and shows flashing, or can be flashed without rebuilding.
• Posts sit on metal bases on concrete, not in soil.
• Hangers and bolts are galvanized and not badly rusted.
• The deck is a reasonable height and layout you want to keep, and any required guard can be rebuilt on the existing rim.
• The deck was permitted, or the city confirms like-for-like resurfacing is treated as repair.

Signs that favor rebuilding

• Rot at the ledger or in the house framing behind it.
• Posts buried in soil or concrete and soft at the base, or footings that have sunk or heaved.
• Several joists soft at the ends; one or two can be sistered, many cannot.
• Ledger attached with nails or screws only, or attached over brick veneer.
• A layout you do not love anyway: wrong size, wrong height, a stair in the wrong place.
• An unpermitted deck that will need a permit to change the railing or stairs; it is often simpler to permit a new deck than to document an old one.

The middle path

Frequently the right answer is a partial rebuild: keep the footings and posts, replace a rotted ledger and the nearest joists, add joists for composite spacing, then resurface. Or keep the whole frame but rebuild the stair, which is the part that fails first and is easiest to redo from scratch. We price these as separate line items so you can see what each piece buys you, and we tell you plainly when the frame is not worth saving. Our own preference leans toward keeping sound structure; wood that has lasted 25 years dry is proven, and new is not automatically better.

One more thing about old painted railings

If the house and its porch or deck railing predate 1978, painted surfaces may carry lead-based paint, and sanding or scraping them is regulated. The EPA's lead program explains what homeowners and anyone working on the house must do. We treat old painted rails with that in mind and would rather replace than sand them.

Related questions

Sources and further reading