How often should I seal my asphalt?
Time between coatings will vary with customers needs. Often "curb appeal" is the reason for sealing. You may not "need" to recoat from a maintenance standpoint, but wish to maintain the newly paved appearance.
A quality two coat job should protect a residential drive for 3-5 years.
Commercial lots, depending on the volume of traffic will usually need recoating between 2-4 years.