Joints or cracks in the pavement, if not sealed properly, will allow water, dirt, and other foreign materials to enter. As water soaks down through the unsealed cracks, increasing damage will occur during the freezing and thawing cycles. Allowing water to penetrate beneath the joint or crack will also displace the subgrade, which will cause further cracking and generally deteriorate the traffic surface.  

A thin protective layer applied to asphalt surfaces to protect against oxidation and asphalt cracking from extreme weathering.

This is a preventative maintenance solution which is a fraction of the cost in comparison to having to re-asphalt your surface. Sealcoat is recommended every 2-4 years depending on the volume of traffic your surface endures over the course of a year.