Estimate asphalt tonnage, volume, and cost for driveways and parking areas.
Asphalt Thickness Guide
Proper asphalt thickness ensures durability and load-bearing capacity for your project.
| Application | Thickness | Base Required |
|---|---|---|
| Residential Driveway | 2-3 inches | 6-8 in gravel |
| Heavy Use Driveway | 3-4 inches | 8-10 in gravel |
| Parking Lot | 3-4 inches | 8-12 in gravel |
| Commercial Road | 4-6 inches | 12+ in gravel |
Frequently Asked Questions
How much asphalt do I need for a driveway?
Calculate the area (length × width), multiply by thickness in feet. Standard residential asphalt is 2-3 inches thick. One ton covers about 80 sq ft at 2 inches or 53 sq ft at 3 inches.
How thick should an asphalt driveway be?
Residential driveways need 2-3 inches of asphalt over 6-8 inches of compacted gravel base. Commercial lots need 3-4 inches. Heavy truck traffic areas may require 4-6 inches.
How much does asphalt cost per ton?
Hot mix asphalt costs $85-150 per ton for material. Cold patch asphalt runs $15-30 per 50lb bag. Total driveway installation costs $3-7 per square foot including base preparation and labor.
How much does asphalt weigh?
Hot mix asphalt weighs about 145 pounds per cubic foot or approximately 2 tons per cubic yard. A standard dump truck can carry about 15-20 tons of hot mix asphalt.
How long does an asphalt driveway last?
A properly installed and maintained asphalt driveway lasts 15-25 years. Seal coating every 2-3 years, filling cracks promptly, and maintaining proper drainage extend lifespan significantly.
When should I seal coat my asphalt?
Wait 6-12 months after new installation, then seal coat every 2-3 years. Apply in warm weather (above 50°F) and allow 24-48 hours to cure. Seal coating protects against UV, water, and oil damage.
Can asphalt be laid over concrete?
Yes, asphalt can be paved over concrete if the concrete is in reasonable condition. Cracks should be filled and the surface cleaned. A minimum of 2 inches of asphalt is recommended for overlay.
What is the minimum temperature for paving asphalt?
Ambient temperature should be at least 50°F (10°C) and rising for proper asphalt compaction. Ground temperature matters too. Spring through fall is the ideal paving season in most regions.
How long before I can drive on new asphalt?
Wait at least 3-5 days before driving on new asphalt. In hot weather, wait longer as the surface remains soft. Avoid parking in the same spot for the first 2 weeks and don’t turn wheels while stationary.
What causes asphalt to deteriorate?
UV rays oxidize and dry out the binder, making asphalt brittle. Water penetration causes cracks and potholes. Oil and gas spills dissolve the binder. Heavy loads and poor drainage accelerate damage.