Intervention road maintenance treatments
Plane and Inlay
If the road surface requires replacement and cannot be overlaid due to levels or condition, the surface layer can be mechanically removed (planed), a tack coat is then applied before re-laying a hot bituminous material to create a new road surface.
Resurfacing
If existing levels are suitable, it is sometimes possible to apply a new surface course directly on top of the existing with minimal or no patching. We call this an overlay. This technique provides a greater thickness of bound surface and is often more cost effective than replacing. This is a surface repair only and can only be done where there is no damage to the existing road structure (small, isolated areas can be patch repaired in advance). Overlaying is often the first process considered when surfacing a carriageway as this takes advantage of the materials already in place, strengthens the road and is the least disruptive.