Slab path with sett edging

Why edge a path with setts?

Setts give a narrow, flexible border that follows curves a full slab cannot. They also take the pressure of soil and roots on the open side, so the slabs themselves are not doing the retaining work.

How is the edge stopped from moving?

Each sett is bedded and haunched in concrete below the finished surface, hidden by the soil line. Without that haunch an edge course lifts within a season, taking the pointing with it.

• Concrete haunch on the soil side of every edge unit
• Falls set towards the border, away from the wall
• Joints pointed after the bed has gone off

Do side paths need the same base as a patio?

Broadly yes for the bedding and edges, though the sub-base can be lighter because there is no vehicle load. What matters more on a narrow run is drainage, because water funnels along it off the roof and the wall.