Edge break An edge break is damage occurring along the outer edge of a concrete slab where pieces chip, crack, or separate from the main pavement. The defect weakens the slab perimeter.
Edge breaks often develop because of inadequate support, repeated loading near the slab edge, freeze-thaw cycles, or impact damage. If left unrepaired, the damaged edge may continue breaking away and allow additional moisture infiltration. Repairs depend on the extent of the deterioration.
Frequently Asked Questions About Edge break
What is an edge break?
Damage along the outer edge of a concrete slab where pieces chip, crack or separate from the main pavement.
What causes edge breaks?
Inadequate support at the slab perimeter, repeated loading near the edge, freeze-thaw cycling and impact damage.
Why do they spread?
The broken edge exposes more surface to water, which then works deeper into the slab and joint with each freeze cycle.
Where are they most common?
At curb edges, driveway aprons and joints where vehicles or equipment cross the slab boundary.