Kanata Lakes, Bridlewood and Morgan's Grant have many interlock driveways and walkways from the 1990s and 2000s. Settling beside the garage, lifted edges and weeds in the joints are the usual complaints.
Where the pavers are still in good shape we relay them after fixing the base, so the repaired area matches the rest of the driveway.
Lift the sunken or heaved section, fix the base, relay the same pavers and compact them level.
Full excavation, a compacted granular base built for Ottawa frost, and pavers rated for vehicle traffic.
Clean out failed joints, refill with polymeric sand, and seal if you want colour and stain protection.
Rebuild leaning block walls and loose interlock steps with a proper footing and drainage behind them.