Is Sealing an Asphalt Driveway Necessary? (Not if Well Built)
Average Cost of Building a new Asphalt Driveway (Expected every 20 years) $5,800. Average Cost of Sealing Your Asphalt Driveway (Recommended every 3 years) $468. Total Cost After 20 Years ($5,800 + $3,276 [7x$468]) $9,076. I think it is unlikely that your driveway will last longer than 20 years if you apply sealing every year.