Deck board and railing repair

What we repair

• Split, cupped or soft deck boards.
• Popped nails and screws that catch bare feet.
• Wobbly railings, loose posts and missing balusters.
• Worn stair treads and loose stringers on low steps.
• Faded surfaces ready to be cleaned and sealed.

Checking the frame first

Before new boards go on, we look under the deck. Joists, beams and posts carry the load, and they rot from the top where water sits on them, or at the ground line. We probe them with a screwdriver.

If the frame is sound, board replacement makes sense. If joists are soft, beams sag, or the ledger board where the deck meets the house shows rot or is not bolted, that is structural repair and is not work we take on.

Replacing boards

We match board width and thickness so the surface stays flat. Redwood and pressure-treated pine are common; composite boards need a matching brand and color, and many lines change over the years, so a perfect match is not always possible. In that case, we suggest replacing a whole run so the change looks planned. We use deck screws instead of nails, which pop less over time.

Railings

A railing should not move when you lean on it. Loose railings usually come from posts fastened with a few nails or screws that have worked loose. We add through-bolts or structural screws and blocking where the frame allows.

Balusters should be close enough that a small child cannot slip through. We space replacement balusters to match the ones already there.

Steps

Steps take the most wear. Treads crack, and the stringers that carry them rot where they sit on soil or concrete. We replace treads to match and set new stringers on short runs of steps. Each step should be the same height so people do not trip.

Cleaning and sealing

Once repairs are done, a cleaned and sealed deck lasts longer. We wash, let it dry, and apply a penetrating sealer or stain. In the valley sun, a deck facing south or west benefits from resealing every year or two.

Small decks, back units and ADUs

Many homes here have a small deck or landing at the back door or at a rear unit. Those get the same care, and they are a good fit for a short visit.

Signs your deck needs work

Boards that flex underfoot, nails that rise, splinters, gray and cracked wood, a railing that moves, and a bounce when people walk across are all signs. Moss or mildew on the shady side means water is sitting on the boards.

Fasteners and hardware

Outdoor screws and nails should be stainless or coated for treated lumber, because treated wood corrodes plain steel. Railing and post connectors should be the galvanized or stainless kind sold for decks. We replace rusted hardware we find while working.

Shade and sun

Decks on the south and west sides dry out and crack faster. Shady decks under trees stay damp and grow mildew. Trimming branches that drop leaves on the deck and sweeping regularly help both kinds last.

Low decks and landings

Low decks close to the ground have little airflow underneath, and they rot faster. We check that the ground under them slopes away and that soil is not touching the wood. When the frame is close to the ground, ground-contact rated lumber is the right choice for repairs.

Safety check

Once a year, push on each railing post, look under the deck for soft wood at the posts and the house, and tighten any loose screws. If anything feels off, send a photo and we will tell you whether it is a quick fix or a problem in the frame.

Mixing old and new boards

New boards next to weathered ones stand out for a season or two. Cleaning and staining the whole deck after repairs evens out the color. With composite, a full section change looks more deliberate than a patchwork of colors.

Stairs in the dark

Deck and porch steps are where people trip at night. A step light or a motion light pointed at the steps helps. See our outdoor lighting page for fixtures on existing outdoor boxes.

How we quote

Send a wide photo of the deck, a close photo of the damaged boards, and a photo from underneath if you can reach. We quote board and railing repair by the job and tell you what we see in the frame.

Weekday or Saturday

We work Monday through Saturday. How long board repairs take depends on the deck; we’ll tell you after seeing photos, and sealing is scheduled once the wood is dry.

Working around your plans

Deck work is noisy and the deck is off limits while boards are out. We schedule around weekend gatherings, keep the yard clear of cut-offs and screws, and use a magnet sweep at the end so no stray screw ends up in a bare foot or a dog’s paw. Old boards are hauled away unless you want to keep some for garden beds.

Planters and hot tubs

Planters set right on deck boards trap water and rot the wood underneath. Raising them on feet lets the deck dry. A hot tub is heavy enough that the frame under it needs a structural check before it goes on an older deck.