The answer to the extremely common question can i lay new asphalt over old concrete is yes you can but we discourage it.
Can asphalt be installed over concrete.
It is possible as long as the added elevation won t pose a problem.
During the winter that moisture freezes and continues to break the concrete down.
Well the answer is yes.
Asphalt works as a driveway base under concrete only when it is strong stable and at least 2 to 3 inches thick.
While it is safe to pave asphalt over concrete there are several reasons why we do not recommend this method.
Holes or cracks with depth of 2 inches or more require filling before concrete overlay is applied.
Holes and cracks can simply be filled with new asphalt or be tarred over for greater durability.
When concrete deteriorates it draws and holds moisture.
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.
If you have a deteriorating concrete driveway you may wonder if you could save a few bucks by having an asphalt driveway installed over it instead of having it demolished first.
Asphalt driveways that are paved over an appropriately compacted subbase will always be superior to asphalt that is laid over an unstable base or concrete that is prone to shifting and expansion.
Before concrete installation begins the asphalt is inspected and repaired as needed.
It will however require a little more maintenance than a typical asphalt overlay.
It is safe to pave asphalt over concrete.
Asphalt is far easier to maintain than concrete.
You can put asphalt over concrete but professionals don t advise it.
In fact many miles of concrete roads are paved over with asphalt every year.
Concrete is poured with expansion joints that allow room for the pavement to expand in hot weather.
Concrete is a great base material because it is stable and allows for excellent compaction of the asphalt above.