Walkways move for two reasons that driveways mostly do not: tree roots growing under them and frost getting into a shallow base. Both lift rather than sink, which is why a path that was flat in October can be catching feet by April, and why dealing with the cause matters more here than anywhere else on a property.
A settled driveway is losing base; a lifted walkway is having something pushed up underneath it. Roots are the first cause and the most persistent, because a root that has found the moisture under a paved path will keep growing along it.
Cutting it back and setting a barrier works where the root is small; where it is a main structural root the answer is a conversation with an arborist before we touch anything, since cutting it can cost you the tree.
Frost is the second, and it is a base problem in disguise: a path built on 75 millimetres of screening over clay holds water, and water that freezes has nowhere to expand except upward. Deepening the base and giving it somewhere to drain is what stops that cycle.
Both faults get identified on the visit rather than levelled over. See what base repair changes underneath, how uneven pavers are re-bedded, and what grading and slope does for a path that holds water.
Uneven Walkways
How It Runs
Four steps to a path that stays flat
Find what is lifting it
A root and a frost heave look identical from above and need different repairs, so we open a spot rather than guess from the surface.
Deal with the cause
Small roots cut back and a barrier set, or the base deepened and drained where frost is doing the lifting. Large roots go to an arborist first.
Rebuild and re-screed
Base taken to a workable depth and compacted, then a true bedding layer screeded over it so the stone has an even seat.
Relay and measure the lips
Pavers reset, tamped, and every joint checked with a straight edge so no stone is left standing proud of its neighbour.
Winter Damage
Why a path looks worse every spring
Frost heave is cumulative. Each freeze lifts the stone slightly and each thaw lets fines wash into the void underneath, so the surface never comes all the way back down.
That is why a path degrades in steps rather than smoothly, and why the right time to look at winter damage is early spring, once the ground has thawed but before the season is booked.
Yes. Small roots are cut back and a barrier set before the base is rebuilt. A major structural root should be looked at by an arborist first, because cutting it can kill the tree.
Frost heave is cumulative. Each freeze lifts the stone and each thaw lets fines wash into the gap underneath, so the surface never settles all the way back.
Not entirely, but a deeper granular base that drains rather than holds water gets most of the way there. The paths with the worst heaving are the ones laid on a few inches of screening.
Often yes on a long path, provided the join lands on a clean course line rather than mid-pattern. On a short front walk it is usually cheaper to do the whole thing while the crew is there.
Early spring, once the ground has thawed. That is when winter damage is at its most visible and before the season fills up.
That is when most people trip on it, so yes. If the surface is otherwise sound, a light at the right height is sometimes the better spend and we will say so. Where the lip grows every season, lighting only makes it visible.
