Driveway Sealcoating in West Chester, PA
Sealcoating is the cheap, repeatable maintenance step that pulls the most life out of an asphalt driveway. A thin coat of asphalt-emulsion or coal-tar sealer goes over the existing surface, fills hairline cracks, blocks UV oxidation, and turns the driveway black again. Done on the right schedule, sealcoating roughly doubles the working life of an asphalt surface.
What the job includes
- Power-blowing the surface to remove dust, leaves, and loose grit
- Edging along grass, garden beds, and pavers so the seal stays off them
- Hot-rubber crack filling on cracks wider than a quarter inch
- Spot priming of any oil stains so the sealer bonds
- Two coats of asphalt-emulsion or coal-tar sealer, applied by squeegee or spray
- Barrier tape across the driveway entrance until the seal is dry
How often a driveway should be sealcoated
The first sealcoat goes on a new asphalt driveway 6 to 12 months after pouring — long enough for the asphalt to off-gas and cure, soon enough that oxidation has not started. After that, every 2 to 3 years is the working interval in this climate. Driveways under heavy tree cover or constant sun exposure tend toward the 2-year side. Lightly used driveways under partial shade can stretch to 3 years.
When sealcoating is NOT the right answer
Sealcoating is a maintenance coat, not a structural fix. It will not bridge alligator cracking, repair potholes, level birdbaths, or hold a failing asphalt surface together. Surfaces with visible structural damage need patching, resurfacing, or replacement first — sealcoating those goes on top later, after the structural work cures. See sealcoating vs. resurfacing if it is unclear which is needed.
Coal-tar vs. asphalt-emulsion sealer
Pennsylvania has not banned coal-tar sealers statewide, though several municipalities and most commercial property managers have moved to asphalt-emulsion or polymer-modified products. Coal-tar lasts slightly longer and is darker out of the can. Asphalt-emulsion is what most homeowners get unless they specifically request otherwise — it cures faster, smells less, and meets the environmental specs that some HOAs and commercial sites require.
Pricing
Residential driveway sealcoating in Chester County typically runs $0.20 to $0.40 per square foot for the seal itself, plus crack filling priced by linear foot. A standard 2-car driveway usually falls between $250 and $500, depending on size and crack work. Parking lots are priced separately based on square footage, line striping, and whether oil-spot priming is needed.
Get a sealcoating quote
Send the address and a photo of the driveway if available. Most quotes are returned same day.
Related
- Asphalt paving
- Asphalt repair — for surfaces too far gone to seal
- Asphalt resurfacing
- Sealcoating vs. resurfacing