What is sealcoating?
It is a process very similar to house painting. Your asphalt driveway may become weak due to sun exposure, oil spills or heavy traffic.

The process of seal coating includes applying a coal tar emulsion or asphalt to help protect it from these damaging elements.
What does sealcoating do?
Sealcoating acts as a protective shield and covers surface voids.

When you seal coat your driveway the exposure to UV rays and oxygen reduces the possibility of gas or oil penetrating your asphalt. It is also a great waterproofing material.
If sealcoat gets on my grass, will sealcoat harm my lawn?
Occasionally sealcoat could overspray slightly onto the lawn. The sealer will not harm the grass; a mowing will get rid of the sealer.
After sealcoating, when can I park on my driveway?
Dry times for sealcoat depend greatly on the exposure to the sun and temperatures. In most cases, you can walk and drive on the driveway within 24 hours after sealcoating.
How often should I seal my driveway?
The answer is highly variable and based on the climate where you live. Climates with a lot of sun and heat or a lot of wintry weather typically require more frequent sealing.

In general, sealing is recommended every two to five years. Some people like to do it more often to keep their driveways looking smooth and well-maintained, but as long as you do it before the five-year mark you should be good to go.

Typically, concrete driveways can go longer between sealings than asphalt ones.