Tarmat UK, providing surfacing services to the UK

Hot Tar and Chip / Surface Dressing

Many highway authorities throughout the UK extensively use the Tar and Chip process. This process consists of applying by specialist spraying equipment, a hot bituminous emulsion to an existing blacktop or concrete surface. When this bituminous emulsion is applied, hard clean aggregates are distributed. This combination of binder and hard stone is then rolled and trafficked to encourage embedding of the chippings to form a durable layer, protecting the older surface beneath against wear and water ingress. There are a choice of aggregates available for different aesthetics.

Re-tread or Double Dressing

This process is very similar to the hot tar & chip process, but instead of applying the bituminous emulsion to an existing blacktop or concrete surface, the binder is then sprayed on, or incorporated, to the unbound aggregate surface. Typical unbound surface suitable for re-tread / double dressing.

Re-Tread

Re-tread involves incorporating the first coat of binder into the aggregate with harrows then two more coats of binder are sprayed on, each followed by a dressing of hard, clean chippings, forming a thick layer of bound material sealing the aggregate beneath and provides a smooth running surface ideal for long driveways and roads.

Double Dressing

Double dressing is the same principal as re-tread with the deduction of an initial first coat of binder and harrowing taking place. Providing the same appearance, but not as thick.