How to reseal driveway expansion joints

Clean driveway

• Use a leaf blower or broom to clear any debris off the driveway.
• You’re trying to prevent loose debris from falling into the caulk as you’re working.
  • I once made the mistake of working on a windy autumn day and spent a fair amount of time plucking leaves out of not-yet-cured caulk.
• You don’t need to power wash or otherwise scrub the surface, though many people combine expansion joint filling with cleaning and sealing their driveway.