Crack & Joint sealing are a methods where cracks in asphalt or concrete surfaces are routed or sawn out, blown clean and filled with flexible rubberized asphalt. Sealing pavement cracks, prevents water from entering the base and sub-base and will extend the pavement life by three to five years.

Sealing is better than filling as fillers do not expand. Sealing lasts longer and cost less. As part of a pavement management system, crack sealing can reduce pavement deterioration by restricting water penetration into underlying base and sub-base layers. This helps to maintain the pavement structure and limits future degradation.

Simply stated, sealing cracks and joints in pavements extends the service life of the pavement. Crack sealing will not improve initial pavement rideability. The benefits are seen in three to five years when  the pavement has not deteriorated. Roads that have been crack sealed have better rideability five years later than other surface treatments, such as chip seals, micropaving, thin overlays and slurry seals. In five years these other treatments have come to the end of their life cycle. Roads and bridges that are crack sealed last longer than those that are not.