How do you maintain wood siding?
Updated August 2026
Wood siding is the highest-maintenance exterior on the house, and the schedule is simple: repaint or restain every 3 to 7 years, re-caulk the joints every year, and spot-prime any bare wood the day you notice it. That finish film is the only thing between the wood and rot, so the moment it cracks or peels, water gets in. Stay ahead of it and the siding lasts 20 to 40 years or far longer; fall behind and boards can rot through in a few wet seasons.
| Task | Interval | Effort |
|---|---|---|
| Walk the walls for peeling, cracked, or blistered paint | Every 6 months | 20 min · DIY |
| Probe suspect spots for soft, spongy rot | Every 6 months | 15 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Wash off dirt, mildew, and pollen | Yearly | 2–4 hrs · DIY |
| Re-caulk gaps at trim, corners, and butt joints | Yearly | $10–20 · DIY |
| Spot-prime and touch up bare or peeling wood | Yearly | 1–2 hrs · DIY |
| Trim shrubs back 12+ inches so siding can dry | Yearly | 30 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Repaint the full exterior | 5–7 yrs (paint) | $3,000–10,000 · pro |
| Restain and reseal, if stained not painted | 3–5 yrs (stain) | $1,500–4,000 · pro |
| Task | Interval | Effort |
|---|---|---|
| Replace individual rotted boards | As needed | $5–15/board + labor |
| Reset or replace popped and rusted nails | As needed | 20 min · DIY |
What neglect costs
The math on wood siding is brutal because the cheap job and the expensive one are the same job at different stages. A $12 tube of caulk and an hour of touch-up paint seals a checked board; skip it for a couple of years and water wicks in behind the paint, the wood swells and rots, and now you are replacing boards at $5 to $15 each plus a painter's time. Let whole walls go and a repaint that would have run $3,000 to $8,000 turns into partial re-siding and carpentry at $10,000 to $25,000. Peeling paint is not cosmetic on wood; it is the countdown to rot.
Leave these to a pro
A full exterior repaint is the big one to hire out: prep is 80 percent of the work, and a crew that scrapes, sands, spot-primes, and caulks correctly is why the finish lasts 6 or 7 years instead of two. Expect $3,000 to $10,000 for an average two-story house, more with heavy scraping or lead-paint handling on a pre-1978 home, which by law needs an RRP-certified contractor. Serious rot repair, sistering or swapping the sheathing behind the boards, is a carpenter's call. The reseal-interval page lays out how paint versus stain changes the timeline.
This whole checklist ships as reminders in OnOtto: every task above, on the right schedule for your home, snooze-proof.
Load this checklist as remindersFrequently asked questions
How often should wood siding be painted or stained?
Paint typically lasts 5 to 7 years on wood siding, sometimes up to 10 on a well-prepped, shaded wall, while semi-transparent stain needs redoing every 3 to 5 years because it wears rather than peels. Sun-blasted south and west walls always go first, so touching those up between full repaints is normal. The real trigger is not the calendar but the finish: when you see chalking, fading, or the first peeling, it is time. The resealing schedule breaks it down by product.
How do I know if my wood siding is rotted?
Press a screwdriver or an awl into any board that looks dark, stained, or paint-blistered, especially near the ground, behind downspouts, and at the butt joints where two boards meet. Sound wood resists; rotted wood is soft, punky, or crumbles away. Other tells are a hollow sound when tapped, fungus or mushrooms, and paint that keeps peeling in the same spot no matter how often you repaint, which means moisture is coming from behind. Catch it early and you replace a board; catch it late and the sheathing goes too.
What kind of caulk should I use on wood siding?
Use a high-quality exterior sealant rated for wood, either a paintable siliconized acrylic or a polyurethane, with a rated life of 20 years or more, not a $2 general-purpose tube. Caulk the vertical butt joints, the seams where siding meets trim and corner boards, and around windows and penetrations. Never caulk the bottom horizontal laps of clapboards, though: those must stay open so any water that gets behind can drain and the wall can breathe. Cut out failed caulk before applying new.
Is wood siding worth the upkeep versus vinyl or fiber cement?
It depends on how much painting you want to own. Wood looks unmatched and can last 40-plus years, but it demands that repaint every 3 to 7 years and prompt rot repairs, which is real money and attention over decades. Vinyl and fiber cement trade some of that look for far less maintenance. If you love the material and will keep the finish up, wood pays you back; if a paint schedule sounds like a chore, a lower-upkeep siding will cost you less grief. A broader exterior plan sits on the home maintenance checklist.