Crack sealing is placement of specialized treatment materials (sealant) above or into cracks ... Crack filling is placement of ordinary materials (asphalt cement, sand, and emulsions) to fill ...

Coal tar sealant: The number-one sealant to stay ... Because it protects existing asphalt, complicated concrete maintenance ...

Asphalt shingles withstand years of ... with urethane caulk to prevent problems. Seal cracks in concrete with durable urethane caulk. You can do it in less than half an hour.