The Commercial Parking Lot Paving Process Explained

Every commercial paving project starts with a close look at the site: existing pavement condition, drainage, traffic patterns, and the loads the lot must carry. Delivery and garbage trucks stress pavement far more than passenger cars, so drive aisles and loading areas usually need a stronger section than parking stalls.

That assessment decides whether the job is new construction, a mill-and-overlay, or a full-depth reclamation, and it sets the base and asphalt depths.

For new construction, the subgrade is prepared and a compacted aggregate base is built to the designed depth. For resurfacing, the existing surface is often milled first to keep grades correct at curbs, gutters, and entrances.

Paving then places a structural binder course and a dense surface course of hot-mix asphalt, each compacted to a specified density. Grading throughout makes sure water drains to catch basins instead of ponding on the lot. Hot-mix work in Connecticut runs roughly April through November, so lots that need paving are best scheduled well ahead of the season.

A parking lot project rarely has to shut a business down. We phase the work area by area so customers and staff always have access to part of the lot, with clear notice about timing and closures.

Once the surface course has cooled, the lot is striped and marked: stalls, drive arrows, fire lanes, and accessible spaces with the required signage and access aisles. Our guide to ADA parking lot striping covers what those spaces need. New asphalt stays relatively soft for months, so plan the first sealcoat for after it has cured.