Should you repair cracks in your driveway? YES, open cracks allow water to infiltrate down to the sub-grade below the asphalt. Once the sub-grade weakens from freeze thaw your driveway will develop alligator cracks, potholes and will need to be replaced.
HOW ARE CRACKS REPAIRED?
- Cracks are cleaned free of grass, dirt and debris by either an air blower or hot air lance
- A hot rubberized crack sealer is applied into the cracks with either a banding applicator or pour pot with squeegee application
Banding applicator applying 400 degree hot rubberized crack sealant
Fully sealed crack after application
WHAT HAPPENS IF I DON’T SEAL THE CRACKS IN MY DRIVEWAY?
If cracks are left unsealed they will begin to spread and develop into alligator / chicken wire cracks. The get that clarification from their resemblance to an alligators back or chicken wire fence.
DO PRODUCTS FROM HOME IMPROVEMENT STORES / HARDWARE STORES WORK?
In my 25 years experience I have never seen a cold applied crack sealing product sold at a home improvement store / hardware store work to properly seal cracks. Most are a liquid asphalt emulsion which are easily flowable to aid in self leveling.
Why don’t they work? Hot applied crack sealants thermodynamically bond with the asphalt thereby providing better longevity. In addition, they are flexible and can withstand the expansion and contraction of working cracks.