What seal coating does
Sealcoat is a thin protective coating applied over sound asphalt. It slows the oxidation that turns pavement gray and brittle, keeps water from soaking in, and resists oil and fuel drips.
It is a surface treatment, not a structural repair. Cracks and potholes get fixed first, then the sealer locks everything in. For a parking lot, fresh striping afterward makes the whole property look new.
Why Oahu Asphalt
- No hidden fees
- The estimate lists prep, crack sealing, coats and striping separately.
- Sealers picked for Hawaii
- Commercial-grade products that handle heat, moisture and salt air.
- Two coats, properly cured
- Each coat gets time to cure before the next one and before traffic returns.
- Phased for busy lots
- We can split a lot into sections so tenants and customers always have parking.
What the work includes
- Surface preparation
- Clean the pavement with blowers, brooms and sweepers, pull vegetation from cracks and edges, and confirm it is dry.
- Crack sealing, if specified
- Clean the cracks and fill them with sealant before any coating goes down.
- Sealer application
- Apply asphalt-emulsion sealer by spray, squeegee or both, in at least two coats with cure time between.
- Striping and markings, if included
- Restripe stalls, arrows and markings to match the original layout once the sealer has cured.
- Cleanup
- Remove barricades, equipment and debris and reopen the area.
How it goes
Inspect and clean
We look over the pavement and clean it thoroughly.
Fill cracks
Existing cracks are sealed so water cannot get under the new coat.
Apply two coats
Premium sealer goes down by squeegee or sprayer.
Cure and check
After curing we inspect for an even finish, then reopen.
Recent seal coating projects
Seal Coating questions
How often should asphalt be seal coated?
Every 3 to 5 years for most properties. High-traffic commercial lots may need it more often.
How long does seal coating take?
Usually one to two days depending on size and weather. Plan on keeping cars off for roughly 24 to 48 hours while it cures.
Does seal coating fill cracks or potholes?
No. It protects the surface but does not rebuild it. Cracks and potholes should be repaired first.
What does the pavement need before sealing?
It has to be clean, dry and in reasonable shape, with cracks sealed and oil spots treated.
What weather is best for seal coating?
Warm and dry, with no rain expected for at least 24 hours after application. On Oahu that means watching the forecast, especially on the windward side.
How long does a seal coat last?
Typically 3 to 5 years, depending on traffic, sun exposure and the condition of the pavement underneath.
Is seal coating worth it?
Sealing costs a fraction of repaving. Blocking UV and water damage early pushes back the day you need an overlay or a full replacement.
Where we work
We provide seal coating across Oahu, including Honolulu, Kapolei, Ewa Beach, Pearl City, Aiea, Kaneohe, Kailua, Mililani, Wahiawa, North Shore and everywhere in between.