How long does wood siding last?
Updated August 2026
Well-kept wood siding lasts 20–40 years, and premium species like cedar and redwood push past 40, but every one of those years is bought with paint or stain. Bare or peeling wood is defenseless against moisture, and moisture is what rots siding from the back and bottom edges where you cannot see it. A quality paint job holds up 7–10 years and a semi-transparent stain 3–5, so the real maintenance clock on wood siding ticks in that shorter cycle, not in decades. Keep the finish intact and direct water away from the wall and cedar can shrug off 40 or 50 winters; let the paint fail and neglected boards can rot out in under 15.
Lifespan by type and situation
| Type or situation | Typical lifespan | Why |
|---|---|---|
| Cedar or redwood | 40+ years | Naturally rot and insect resistant; the longest-lasting wood siding |
| Pine or fir, painted | 20–30 years | Common and affordable; lives or dies by the paint film |
| Engineered wood (hardboard) | 20–30 years | Composite boards; durable as long as the edges stay sealed |
| Any wood, finish kept up | Top of the range | Repaint or restain on schedule and it reaches its full life |
| Any wood, finish neglected | Under 15 years | Peeling paint lets water in and rot takes the boards from behind |
Signs yours is near the end
- Paint peeling, blistering, cracking, or flaking down to bare wood
- Boards that are soft, spongy, or crumbling when pressed, especially near the ground
- Cupping, warping, or splitting boards that no longer sit flat
- Dark gray or green discoloration and mildew that keeps returning after washing
- Popped or rusting nails and gaps opening at the joints and butt ends
- Visible daylight, insect galleries, or woodpecker holes through the boards
How to add years
Wood siding is the most maintenance-hungry cladding on the house, and the reward for keeping up is decades of extra life. Repainting every 7–10 years or restaining every 3–5, before the old finish fails rather than after, keeps water out of the wood and is the whole game; resealing on time can be the difference between 20 years and 40. Caulk the joints and around windows, keep sprinklers and shrubs off the boards, and hold mulch and soil several inches below the lowest course so the bottom edge stays dry. A yearly walk-around, part of a wood siding routine, catches peeling and soft spots while a scrape-and-repaint still fixes them, long before a board has to come off. Fixing the small stuff early is far cheaper than the $10,000-plus of a full residing job.
What it costs to replace: plan on $10,000–20,000 to re-side a house ($7–12 per sq ft installed). Replacing on your own schedule, before it fails, is almost always cheaper than the emergency version. The home maintenance cost calculator helps you set the money aside before it comes due.
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Track your home's systems, free for 30 daysFrequently asked questions
How often does wood siding need to be repainted?
Most painted wood siding needs a fresh coat every 7–10 years, and semi-transparent stains want redoing every 3–5. The exact interval depends on exposure: south and west-facing walls that take the most sun and rain fail first, while shaded north walls can go longer. The trigger is the finish starting to fade, chalk, or peel; catch it before bare wood shows. Repainting on schedule is not cosmetic upkeep, it is what keeps water out of the wood and pushes the siding toward its 40-year potential.
Is it better to repair or replace rotted wood siding?
Spot-replace if the rot is localized, reside if it is widespread. A few rotted boards can be pried off and swapped for a couple hundred dollars, then primed and painted to match, which is well worth it on siding that is otherwise sound. But once rot shows up on multiple walls, or the same boards keep failing because water keeps getting behind them, patching becomes a losing game against a $10,000-plus residing job. Always find and fix the water source, a bad flashing or gutter, before replacing boards, or the new wood rots too.
Does wood siding last as long as fiber cement or vinyl?
Not without more work. Fiber cement lasts 30–50 years and vinyl 20–40 with almost no upkeep, while wood needs repainting every 7–10 years to reach a comparable 20–40. Cedar and redwood can match or beat the alternatives on pure lifespan, past 40 years, but only if the finish is maintained. The tradeoff is looks and repairability: wood can be sanded, patched, and refinished indefinitely, whereas a cracked vinyl panel or chipped fiber cement board is harder to fix invisibly.
What causes wood siding to fail early?
Water, nearly every time. Peeling paint left unrepaired lets moisture soak into the boards; poor flashing, leaking gutters, and sprinklers hitting the wall keep them wet; and mulch or soil piled against the bottom course wicks moisture up into the end grain. Once wood stays damp, rot and insects follow and can destroy boards in a few seasons. Sun accelerates finish failure on exposed walls. The fix is boring but decisive: keep the finish intact, the joints caulked, and water directed away from the siding.