Your driveway takes a beating. Sun dries it out. Rain soaks in. Winter ice cracks it open. Sealing is one way to slow that wear down.
This guide is for homeowners in Harrisburg. It explains what driveway sealing is, when it makes sense, and how the job goes from start to finish.
What Is Driveway Sealing?
Driveway sealing is a thin, dark coat that goes on top of asphalt. It acts like a shield. It helps keep water, oil, and sun from wearing down the surface.
It also gives a faded gray driveway a fresh, even look. People also call it sealcoating or seal coating. It all means the same thing.
Sealing is not a repair. It does not fix deep cracks, sunken spots, or broken edges. Those need to be handled first.
When Does a Harrisburg Driveway Need Sealing?
Look at your driveway on a dry day. These signs say it may be time:
- The color has faded from black to gray.
- The surface looks dry and rough.
- Small stones are coming loose.
- Hairline cracks are showing up.
- Water soaks in instead of beading up.
Newer asphalt needs time to cure before it gets sealed. Read our guide on when to seal a new asphalt driveway to learn how long to wait.
If you are not sure how often to seal, see how often to reseal an asphalt driveway.
What Does Winter in Harrisburg Do to Asphalt?
Central PA has real freeze and thaw cycles. Water gets into small cracks. When it freezes, it expands and pushes the crack wider. Then it melts and more water gets in.
Over a few seasons, small cracks can grow. Sealing helps keep water out of the surface. That is one reason many homeowners plan it before the cold sets in.
What Happens Before the Sealcoat Goes On?
The prep decides how the job turns out. A coat over dirt or open cracks will not bond well. A good crew does this work first:
- Sweep and clean the surface.
- Pull or treat weeds in the cracks.
- Fill the cracks so they are not open to water.
- Treat oil spots so the coat can stick.
- Edge and protect nearby lawn and walkways.
You can help too. Walk your driveway a week ahead and take a few photos. Note low spots where water sits. Our guide on how to prepare your driveway for sealcoating has a full checklist.
Wide cracks are a special case. Our post on crack sealing vs crack filling explains the difference.
What Is the Weather Rule for Sealing?
Sealcoat needs dry weather to set. It also needs a mild day. Rain too soon after the job can wash the coat out. Cold air slows the drying.
Because of this, crews pick days with a dry forecast. Your job may move if the weather turns. That is normal. A good crew would rather reschedule than put a coat down in bad conditions.
Not sure if fall works? See should you sealcoat in the fall.
What Is the Day of the Job Like?
Here is a simple picture of the day:
- The crew arrives and checks the surface.
- They clean it and fix the cracks.
- They apply the sealcoat in even coats.
- They mark off the driveway so no one walks on it.
You will need to move your cars before they arrive. Keep kids, pets, and bikes off the driveway too. The crew will tell you how long to stay off. Follow their time, since it depends on the weather that day.
Should You Seal or Resurface?
Sealing works on a driveway that is worn but still solid. If the driveway has deep cracks, sunken areas, or crumbling edges, sealing will not be enough. It may need patching or a new layer of asphalt.
Our guide on seal coating vs resurfacing can help you decide. A crew can also look at it in person and tell you what it needs.
Why Use a Local Crew?
Nathan’s Paving & Seal Coating has worked in Central PA for over 20 years. We know how the local weather treats asphalt. We also know how to plan around it.
Learn more about our driveway seal coating services in Harrisburg, or read our full driveway sealcoating guide.
Frequently Asked Questions
How long should I stay off a sealed driveway?
It depends on the weather and the product. The crew will give you a time on the day of the job. Stay off until they say it is okay.
Can I seal my driveway in cold weather?
Cold slows the drying and can hurt how the coat bonds. Crews wait for a mild, dry day.
Do cracks need to be fixed first?
Yes. Sealcoat is thin and will not fill wide cracks. Filling them first keeps water out and gives the coat a solid surface.
Will sealing fix a sinking driveway?
No. Sinking points to a base problem. That needs repair, not a coat.
Talk to Nathan’s Paving
Want a crew to look at your driveway? Call (717) 648-5030 or email nathanpaving@gmail.com. You can also request a quote online.
