Can You Put Asphalt Sealer Over Concrete

I have a neighbor that has a concrete pad attached to his asphalt driveway.

Can you put asphalt sealer over concrete.

Asphalt sealers are specific chemical mixtures designed for asphalt penetration and top sealing. Asphalt can be successfully installed over concrete but due to the characteristics of each material you may not be happy with the long term results as the asphalt will ultimately crack in the same manner that concrete does. It is safe to pave asphalt over concrete. The asphalt is more porous than concrete which allows this application to work on asphalt.

Now this being said i wouldn t be afraid to try this on small area as a test. Choosing the right asphalt driveway sealer. Holes or cracks with depth of 2 inches or more require filling before concrete overlay is applied. In fact many miles of concrete roads are paved over with asphalt every year.

You can put asphalt over concrete but professionals don t advise it. Most asphalt sealers require a squeegee while most concrete sealers use a brush or sprayer. Before concrete installation begins the asphalt is inspected and repaired as needed. Asphalt works as a driveway base under concrete only when it is strong stable and at least 2 to 3 inches thick.

A concrete stain might hold up better. Only work on 2 to 4 foot sections at a time. About 15 yrs ago when he resealed the asphalt he also applied the sealer to the concrete. Actually probably not a good idea.

It will however require a little more maintenance than a typical asphalt overlay. No you cannot use blacktop sealer. When concrete deteriorates it draws and holds moisture. It looked good at first but within a year most of the sealer had worn off of the concrete.

Well the answer is yes. Concrete is a great base material because it is stable and allows for excellent compaction of the asphalt above. The truth about asphalt over concrete an asphalt overlay is cheaper to install than replacing concrete and can provide a smooth ride over deteriorating concrete. It s hard to beat the aesthetic appeal of an asphalt blacktop driveway but over time the material can develop spider web cracks and low spots left.

It will never cure properly on concrete. They do make sealers for concrete check with you hardware store or home center.