Siding · Wood siding
How long does wood siding last?
The USDA Forest Service put it plainly in its wood siding bulletin: given reasonable care, wood siding will retain its beauty for centuries — and colonial-era clapboard still on its houses is the proof offered. Read the condition in that sentence. The same bulletin gives one coat of paint four to five years and two coats about ten. The wood is not the clock; the finish is. And no mill publishes a warranty on a stack of boards.
Updated
Typical service life: 100+ years
The bulletin's phrasing is that "given reasonable care, wood siding will retain its beauty for centuries, as has been amply proved by its performance on houses that date back to early colonial times." The 200 here only bounds the drawing. Everything in the claim hangs on "reasonable care": the same document puts a one-coat paint system at 4 to 5 years and two coats at up to 10, and boards left unfinished do not see the bottom of this range.
Tier 2 · trade / standards literature Range from USDA Forest Service, Forest Products Laboratory — Wood Siding — Installing, Finishing, Maintaining (Home and Garden Bulletin 203), checked 2026-08-27.
Wood siding's range is written first by rain and sun, then rewritten by the repaint schedule. Dry, high-UV climates burn finishes off quickly but rarely rot the boards; humid and heavily shaded walls rot them. The centuries in the source belong to houses that were repainted perhaps twenty times to get there.
Why there is no warranty bar here
Solid wood siding is sold as lumber, by grade, and no mill publishes a homeowner warranty on it — there is nothing on this bar because there is nothing to put there. The paper that does exist belongs one layer off: the coating manufacturer warrants the paint or stain for its own short term, and the installer stands behind the workmanship. The boards themselves arrive with a grade stamp and no promise about years.
What shortens it
- A lapsed paint or stain program — bare wood weathers, checks, and starts drinking at the end grain within a couple of seasons
- Splash-back where boards sit too close to grade, a deck, or a lower roof
- Shaded, north-facing walls that stay damp and grow mildew under the finish
- Sprinklers and leaking downspouts wetting the same boards year after year
- Pressure washing, which drives water behind the courses and raises the grain so the next coat fails sooner
Signs of wear to look for
- Paint peeling back to bare wood in patches rather than chalking evenly across the wall
- Boards cupping or splitting along the grain, with open checks at the butt ends
- Soft, punky wood at the bottom courses and around window and door casings when pressed with a thumb
- Dark staining and mildew tracking down from joints, ledges and fastener heads
- Woodpecker holes or carpenter bee borings, and fine sawdust collecting at the base of the wall
Rot that has travelled past the siding into the sheathing, sill or framing behind it — soft walls, sagging trim, fasteners that will not bite — is a structural question, and that is an inspection question, not a web-page question.
Other siding materials
- Vinyl siding 50+ yrs
- Fiber cement siding 100+ yrs
- Engineered wood siding 100+ yrs
- Aluminum siding 25+ yrs
- Brick veneer 150+ yrs
- Stucco 50–100 yrs
- Manufactured stone veneer 100+ yrs