How long does an exterior door last?
Updated August 2026
An exterior door lasts 20–40 years: fiberglass 30–40, steel 20–30, and wood 20–30 with steady refinishing. Exposure counts as much as material, so a deep covered porch adds close to a decade to any of them while a west-facing door with no overhang bakes, swells, and checks. The part that quits long before the door does is the weatherstripping, which flattens and hardens in 3–7 years. That is why an old entry usually feels drafty rather than broken, and why a $20 seal kit answers most complaints about a door with 15 good years still in it.
Lifespan by type and situation
| Type or situation | Typical lifespan | Why |
|---|---|---|
| Fiberglass | 30–40 years | Will not rot, warp, or rust; the strongest pick for an exposed entry |
| Steel, insulated | 20–30 years | Cheap and rigid, but dents are permanent and scratches start rusting |
| Wood, solid or engineered | 20–30 years | Refinish every 2–4 years or it swells, splits, and stops closing |
| Weatherstripping and door sweep | 3–7 years | The first thing to fail on any door, at $15–40 to put right |
Signs yours is near the end
- Daylight around the edges of a closed door, or a draft you can feel with your hand
- Weatherstripping that has flattened, cracked, or fallen out of its channel
- Rust bubbling through the paint on steel, or wood that is split, soft, or delaminating
- A door that drags, sticks, or no longer lines up with the strike plate, plus rot at the threshold or jamb
How to add years
Doors age at the seams and the sill, so the upkeep is small and specific. Swap the weatherstripping and door sweep when they flatten, roughly every 3 to 7 years; a $15–40 kit takes twenty minutes and kills the drafts that convince people they need a $2,000 door. Tighten the hinge screws once a year, and if the door drags, replace one screw in the top hinge with a 3 inch one that reaches the framing and pulls the jamb back square. Keep the finish intact, since a wood door on an exposed elevation needs refinishing every 2 to 4 years, the same keep-water-out logic that governs how long a deck lasts. Re-caulk the exterior trim and check the threshold seal each fall, because rot in the sill is what turns a fixable door into a full unit replacement. Fold these into the seasonal pass on the home maintenance checklist, and the maintenance interval guides cover the rest of the exterior.
What it costs to replace: plan on $500–2,000 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.
OnOtto tracks your door weatherstripping age and service history, and warns you before end of life instead of after the flood.
Track your home's systems, free for 30 daysFrequently asked questions
Is a fiberglass or steel entry door better?
Fiberglass for an exposed entry, steel for a budget or a side door. Fiberglass skins never rot, dent, or rust, take a convincing wood grain, and deliver 30 to 40 years at $600 to $2,000 for the slab. Steel costs less at $300 to $1,200, resists forced entry slightly better, and insulates well, but a dent stays forever and any scratch reaching bare metal starts rusting, which is why a steel door under full sun and rain often needs paint by year 8. Under a deep porch or in a garage, steel is plenty.
How do you stop a drafty front door?
Work outward from the cheapest fix. Replace the perimeter weatherstripping at $15 to $40, then the bottom sweep at $15 to $30, which together handle most drafts. Adjust the strike plate so the door pulls tight against the seal instead of resting near it. If daylight shows at one corner, the slab is out of square, and a long hinge screw driven into the framing usually pulls it back. Only after all of that is a new door or jamb worth discussing. A $50 afternoon beats a $1,500 replacement most of the time.
Does a new front door actually save energy?
Some, though less than the brochure suggests. A single entry door covers about 20 square feet of the building envelope, so even a big efficiency jump moves the annual bill modestly, often $30 to $80. The real gain comes from stopping air leakage around the frame, which is exactly why sealing an existing door captures most of the benefit for a tiny fraction of the cost. Replace a door because it is rotted, insecure, ugly, or past adjustment. Treat the energy savings as a bonus rather than the justification.