Not all cracks are candidates for sealing. There is a sign of subgrade failure called "alligatoring", this is recognized by having a lot of cracks that interconnect. In most cases, these crossed cracks are filled with dirt or moss, acting as the "mortar" and is the only thing keeping the pieces of asphalt from falling apart. When cracks have reached this stage, the pavement has already lost structural integrity and trying to clean the cracks enough to take the sealant is not practical. The areas with the cracks should be removed and patched with hot mix asphalt. For your asphalt needs, contact our sister company Northern Asphalt
. For very thin cracks, sealing can be used but there may not be enough material to enter the crack. It is expected to see re-opening of the crack as the pavement moves during temperature changes.