Most driveways get replaced years before they need to be, and sealed several times more often than they benefit from. Both happen for the same reason: it is a large visible surface, deterioration is gradual, and the people who fix it are usually the people telling you it is time.
Read the damage first
| What you see | What it means | What it needs |
|---|---|---|
| Hairline surface cracks, spread evenly | Normal ageing and UV | Nothing urgent. Sealing helps on asphalt. |
| Single cracks under about a quarter inch | Ordinary movement | Fill them, mostly to keep water out before winter |
| Wide cracks, edges crumbling | Water is getting into the base | Repair properly now — this is the stage where waiting gets expensive |
| Interlinked cracking like reptile skin | Base failure underneath | Surface work will not fix it. Section replacement or full replacement. |
| Potholes, sunken areas, standing water | The base has washed out or was never right | Excavation, not resurfacing |
| Concrete slabs at different heights | Settlement | Often liftable by injection — far cheaper than replacing |
The important distinction is surface versus base. Anything wrong with the surface is repairable at moderate cost. Anything wrong with the base will come back through whatever you put over it, usually within two winters.
Sealing: useful, and oversold
Asphalt. Sealing genuinely helps — it slows oxidation and keeps water out. But it is generally recommended every three to five years, not annually. Over-sealing builds up layers that crack and peel on their own, and a driveway sealed every year usually looks worse by year six than one sealed every four.
Concrete. A different product and a different purpose, mostly about resisting salt and freeze-thaw damage. Concrete does not need the asphalt treatment and applying one to the other is a real mistake.
Timing matters more than people expect: sealing wants dry weather and moderate temperatures, and a seal applied in the wrong conditions fails early regardless of the product.
The oldest scam in this category still runs every summer. Somebody arrives unannounced with "leftover material from a job down the road" and offers a cheap seal or resurface today. What frequently goes down is thinned material or used motor oil, which looks correct for a few weeks and then never cures. Nobody legitimate sells driveway work door to door with surplus asphalt.
Repair or replace
A rough rule that holds up: if the base is sound and the damage is surface-level over less than roughly a quarter of the area, repair. If the base has failed, or you are patching year after year, replacement is usually cheaper across five years even though it is much more expensive today.
Two things worth asking any quote for a replacement, because they are where quality actually lives and neither is visible afterwards: how deep the base is going, and what the drainage plan is. A driveway fails from underneath and from standing water. A thin base with good-looking asphalt on top is the most common way to buy a five-year driveway at a twenty-year price.
Who does what
- Crack filling, patching, cleaning, sealing a normal residential drive: a local. Straightforward work, materials from any hardware store, and easy to check afterwards.
- Resurfacing or full replacement: a paving contractor with equipment. Get two or three quotes and compare base depth, not just the total.
- Concrete slab lifting: a specialist. Worth pricing before accepting any quote to replace settled slabs, because it is frequently a fraction of the cost.
Frequently asked questions
How often should I seal an asphalt driveway?
Every three to five years for most driveways, not annually. Over-sealing builds up layers that crack and peel independently of the asphalt underneath, so a drive sealed every year often looks worse by year six than one sealed every four.
When does a driveway need replacing rather than repairing?
When the base has failed rather than the surface. Interlinked cracking like reptile skin, potholes, sunken areas and standing water all point at the base, and anything laid over a failed base comes back through within a couple of winters. Surface cracking over less than about a quarter of the area is a repair.
Should I let someone seal my driveway if they knock on the door?
No. Door-to-door driveway work with "leftover material from a job nearby" is one of the longest-running scams in home services — the material is frequently thinned or is used motor oil, and it looks right for a few weeks before failing to cure. Nobody legitimate sells paving this way.
What should I ask a paving contractor for a quote?
How deep the base is going, and what the drainage plan is. Those two decide how long the driveway lasts and neither is visible once the job is finished, which is exactly why they are where quotes differ. Compare those before comparing totals.