Asphalt sealcoating in San Antonio is a protective coating spread over driveways and parking lots to block UV rays, heat, water and oil. It slows the oxidation that turns asphalt gray and brittle, and it restores a deep black finish. Most pavement here should be sealcoated every 2 to 3 years, starting 6 to 12 months after paving, with cracks sealed first.
The San Antonio sun is asphalt’s biggest enemy after water. UV rays and heat oxidize the asphalt binder, which is the glue that holds the stone together. Over time the surface turns gray, gets brittle and starts to crack and ravel. Sealcoating puts a protective layer over the pavement that takes that wear instead, for a fraction of the cost of repaving. It’s the most cost-effective maintenance step we offer as part of San Antonio asphalt paving and maintenance, whether you own a home driveway or manage a commercial parking lot.
What Sealcoating Does
- Blocks UV and oxidation so the asphalt stays flexible longer.
- Seals the surface against water from rain and sprinklers.
- Resists oil, gas and chemical spills that soften asphalt.
- Fills surface voids and slows raveling.
- Restores a uniform black finish that improves curb appeal and makes new striping stand out.
Sealcoating protects pavement. It doesn’t fix structural damage. Potholes, alligator cracking and sunken areas need asphalt repair first.
Parking Lot Sealcoating for San Antonio Businesses
A sealcoated, freshly striped lot tells customers and tenants your property is well run. For retail centers, offices, apartments, churches and HOAs, we:
- Seal cracks and patch small failures first
- Apply two coats of commercial-grade asphalt-emulsion sealer
- Work in sections and at off-peak hours so your business stays open
- Restripe the lot as soon as the sealer cures, usually the next day
Heads up on ADA: under the ADA, resealing and restriping a parking lot count as alterations, so the finished lot must include the required accessible spaces. We check your accessible parking with every commercial sealcoating estimate. See ADA parking lot striping.
We'll inspect your pavement and give you a written quote. Mon–Sat: 7:00 AM – 6:00 PM.
Driveway Sealcoating for San Antonio Homes
For homeowners, sealcoating is the easiest way to keep an asphalt driveway looking new and lasting longer. A typical two-car driveway takes a few hours to seal and is ready to drive on in 24 to 48 hours. We hand-edge along garage slabs, sidewalks and landscaping so sealer stays only where it belongs. Pair it with crack sealing to stop water from reaching the base.
Our Sealcoating Process
- Clean the surface. We blow off and sweep debris, edge back grass, and scrape off dirt and stains.
- Fill the cracks. Cracks are cleaned and filled with hot-pour rubberized sealant. See crack sealing.
- Treat oil spots. Oil and fuel stains get a primer so the sealer bonds.
- Apply two coats. We apply a commercial-grade asphalt-emulsion sealer, often with sand added for traction, in two coats by squeegee or spray.
- Cure and reopen. The area is barricaded until the sealer has cured, usually 24 to 48 hours. Parking lots are then ready for restriping.
How Often to Sealcoat in San Antonio
| Pavement | First sealcoat | After that |
|---|---|---|
| New residential driveway | 6–12 months after paving | Every 2–3 years |
| Parking lot, light traffic | 6–12 months after paving | Every 2–3 years |
| Parking lot, heavy traffic | 6–12 months after paving | Every 2 years |
New asphalt needs time to cure before it’s sealed. Sealing too often is also a mistake, because too many layers can crack and peel. If water still darkens the surface quickly when you spray it, the existing sealer is probably worn through.
Asphalt-Emulsion vs. Coal-Tar Sealers
Coal-tar sealers have been used for decades, but they contain high levels of polycyclic aromatic hydrocarbons (PAHs), and some Texas cities, including San Antonio and Austin, have banned their use. We use asphalt-emulsion sealers that perform well in the San Antonio climate without those concerns.
Sealcoating Cost in San Antonio
| Project | Typical price range |
|---|---|
| Driveway sealcoating (per sq ft) | $0.20 – $0.40 |
| Typical two-car driveway (about 960 sq ft) | $250 – $500 |
| Parking lot sealcoating (per sq ft) | $0.15 – $0.30 |
| Small lot, about 20 spaces (8,000 sq ft) | $1,200 – $2,400 |
| Crack sealing (added) | $1 – $3 per linear foot |
| Sealcoat + restripe package (40,000 sq ft lot) | $7,000 – $16,000 |
Estimated 2026 ranges for the San Antonio area, not a quote. Large lots have a lower price per square foot.
Your estimate lists sealcoating, crack sealing and striping separately so you can see exactly what you’re paying for. Compare other services in our San Antonio paving cost guide.
Best Weather for Sealcoating
Sealer needs warm, dry weather to cure: generally temperatures above 50°F and rising, and no rain for at least 24 hours. That gives San Antonio a long sealcoating season from spring through fall, with winter work scheduled around cold fronts. On the hottest summer days we work early in the morning so the sealer doesn’t dry too fast.
Sealcoating FAQs
How long before I can drive on a sealcoated driveway?
Usually 24 to 48 hours. Foot traffic is typically fine after a few hours once the sealer is dry to the touch, but cars need the sealer to fully cure.
How often should you seal an asphalt driveway?
Every 2 to 3 years for most San Antonio driveways, starting 6 to 12 months after the asphalt is paved. Sealing more often doesn’t help and can build up layers that crack and peel. A simple test: if water darkens the surface right away when you spray it, the old sealer has worn through.
Will sealcoating fix cracks?
Sealcoat alone won’t. Cracks must be filled with crack sealant first, which is why crack filling is part of our sealcoating process.
Is sealcoating worth it?
For pavement that’s still structurally sound, yes. Regular sealcoating and crack sealing are the least expensive ways to extend the life of asphalt and delay costly resurfacing or replacement.
Will the sealer track into my house?
Once it has fully cured, no. During the curing time, keep pets, kids and foot traffic off the surface, and we’ll barricade the area.
How much does sealcoating cost in San Antonio?
Most driveways cost about $250 to $500 to sealcoat, and parking lots usually run about $0.15 to $0.30 per square foot. The final price depends on size, how many cracks need sealing and the surface condition.
Should I sealcoat and restripe my parking lot at the same time?
Yes. Restriping right after sealcoating gives the sharpest lines, saves a second mobilization fee and closes your lot only once. We usually stripe the day after sealing, once the sealer has cured.
Can new asphalt be sealcoated right away?
No. New asphalt needs time to cure, so the first sealcoat is usually applied 6 to 12 months after paving. Sealing too early can trap oils and leave a soft surface.
Related Services
Asphalt Repair
Pothole repair, patching and base-failure fixes before small damage becomes a rebuild.
Learn more
Parking Lot Striping
Layout, re-striping, ADA stalls and fire lane markings.
Learn more
ADA Parking Lot Striping
Accessible stalls, van spaces, access aisles, Texas NO PARKING lettering and signs.
Learn more
Crack Sealing
Hot-pour rubberized crack sealing that keeps water out of the base.
Learn more