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Driveway Guide: Asphalt, Concrete & Gravel Compared

A driveway is one of the few home projects where the material you can see is the least important part. What decides whether a driveway lasts fifteen years or cracks in three is the compacted base underneath it, and that is the part homeowners are most often talked out of paying for.

This guide covers the three common surfaces, what each costs to install and own, and how to estimate quantities for both the base and the surface.

The base comes first

Asphalt and gravel are flexible pavements: they distribute load downward into whatever is beneath rather than spanning across it. Concrete is a rigid pavement and does span, but it still cracks if the support under it settles unevenly.

Either way, the sub-base is structural. A typical residential build-up:

| Layer | Depth | Purpose | |---|---|---| | Sub-grade | — | Native soil, stripped of topsoil and compacted | | Aggregate base | 4–8 in | Crushed stone, compacted in lifts | | Surface | 2–4 in | Asphalt, concrete, or more gravel |

Crushed angular stone is what you want in the base, not rounded river gravel. Angular fragments lock together under compaction; round stone rolls. The base also has to be compacted in lifts — 3 to 4 inches at a time — because a plate compactor cannot densify 8 inches of loose rock in one pass, and a base that looks finished but is loose underneath fails the first winter.

Poor drainage undoes good base work. Water in the base freezes, expands, and lifts the surface. A slight crown or cross-slope, roughly a quarter-inch of fall per foot, moves water off the surface rather than through it.

Estimate base material with the gravel calculator, which handles crushed stone density and reports both cubic yards and tons.

Asphalt

Asphalt is the default in cold climates for good reasons: it costs less up front, it flexes rather than cracking as the ground moves with frost, and it can be resurfaced without demolition.

Build-up: 2–3 inches of compacted surface course over 4–8 inches of aggregate base for cars. Where trucks or an RV park regularly, go to 4 inches of asphalt over 8 inches of base.

Cost: hot-mix ran roughly $100–150 per ton delivered in 2025, and prices track crude oil closely enough that quotes go stale in weeks. Installed with base work, driveways generally land between $4 and $8 per square foot.

Coverage: at 2 inches compacted, one ton covers about 80 square feet; at 3 inches, about 55.

Temperature matters. Below roughly 50°F the mix cools before it can be compacted properly, and asphalt that was not compacted while hot fails early no matter how thick it is. Most crews stop paving once nights drop consistently near freezing. New asphalt takes 24–72 hours before light traffic and 6–12 months to cure fully; during that first summer, avoid parking in one spot for days or turning the wheel while stationary.

Run quantities with the asphalt calculator, which takes mix density as an input because it varies by several percent between suppliers.

Concrete

Concrete costs more up front and lasts longer with less maintenance. It handles heat far better than asphalt, which softens in sustained high temperatures, and it takes point loads without rutting.

Build-up: 4 inches minimum for cars, 5–6 inches where heavy vehicles park, over 4 inches of compacted base. Reinforcement — fibre, wire mesh, or rebar — controls how existing cracks behave rather than preventing them.

Control joints are not optional. Concrete shrinks as it cures and will crack; joints decide where. Cut or tool them at intervals of roughly 24 to 30 times the slab thickness in feet — for a 4-inch slab, every 8 to 10 feet — and within 6 to 12 hours of the pour.

Cost: ready-mix ran $125–175 per cubic yard in 2025, with installed driveways typically $6–12 per square foot.

Estimate with the concrete calculator and check the pour window against the weather, since concrete placed below 40°F needs cold-weather measures under ACI 306.

Gravel

Gravel is the cheapest surface to install and the most maintenance-hungry to own. It suits long rural drives, secondary access, and anywhere a hard surface would be over-built.

Build-up: a coarse base course of 4 inches, then 2–3 inches of a smaller angular top course. Using one size throughout is the common mistake — the large stone stays loose and the small stone migrates into the sub-grade.

Maintenance: expect to top up every few years and regrade after heavy rain. Edge restraint of some kind keeps the material where you put it, and a geotextile fabric between sub-grade and base stops the stone disappearing into soft soil, which is the usual reason a gravel drive needs constant replenishment.

The gravel calculator covers material types and densities.

Choosing

| | Asphalt | Concrete | Gravel | |---|---|---|---| | Install cost | $4–8/ft² | $6–12/ft² | $1–3/ft² | | Lifespan | 15–25 yr | 30–40 yr | Indefinite w/ upkeep | | Cold climate | Excellent | Good | Good | | Hot climate | Softens | Excellent | Fine | | Maintenance | Seal every 3–5 yr | Minimal | Regrade, top up | | Repairable | Yes, resurfaces well | Patches are visible | Trivially |

In freeze-thaw regions asphalt usually wins on cost of ownership. In hot, stable climates concrete does. Gravel wins wherever the driveway is long enough that surfacing cost dominates every other consideration.

Estimating checklist

  1. Measure the area with the square footage calculator — include the apron at the street and any turnaround.
  2. Size the base with the gravel calculator at 4–8 inches depending on soil and load.
  3. Size the surface with the asphalt calculator or concrete calculator.
  4. Add waste: 5% for asphalt, 10% for concrete.
  5. Check access. A ready-mix truck needs overhead clearance and a route that will carry 60,000 lb; a paving crew needs room to manoeuvre. Site access changes quotes more than most homeowners expect.

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