Duralayer Multi ® / Duralayer Multi ®+

Duralayer Multi® is a dense material design for single layer applications. It is suited to a variety of asphalt surfacing applications where a low textured and deformation resistant one layer treatment is required.

Duralayer Multi was designed following a request from a local authority for a cost-effective, single layer solution. It utilises locally sourced aggregates and is suitable for a variety of applications including major roads, rural roads, housing estates, car parks, caravan parks and trench reinstatements.

The product’s unique design creates a low surface texture and controlled low air voids. This resists water
ingress, providing a more durable surfacing solution. Duralayer Multi doesn’t segregate like traditional materials, making it also ideal for handlay applications.

Duralayer Multi is available in 20mm, 14mm, 10mm and 6mm nominal sizes and is laid using conventional
paving equipment in line with BS 594987.

Duralayer Multi+
Utilises the same unique design as Duralayer Multi
and provides enhanced fuel resistance and stiffness.

Layer thickness

Details of constituent quality and layer thickness shown below:

  • 6mm nominal size 30 – 60mm
  • 10mm nominal size 40 – 80mm
  • 14mm nominal size 50 – 100mm
  • 20mm nominal size 60 – 150mm


  • Single layer installation
  • Less disruption through quicker installation
  • Increased durability through low voids content
  • Low design void content assists compliance with SROH requirements
  • Prevents water ingress
  • Resistance to deformation
  • Sustainable product
  • Duralayer Multi+ has fuel resisting properties
  • 100% recyclable

Also available in the following options:


  • All classifications of roads
  • Housing estates
  • Car and caravan parks
  • Footpaths
  • Trenches

Duralayer Multi technical data

Typical performance figures  * Typical value for surface texture.

Material property Test specification Typical result
Design void content BS EN 12697-6 ≤ Vmax 5.0%
Water sensitivity BS EN 12697-12 Method A (ITSR) BS EN 12697-23 ≥ 80%
RTPD (wheel tracking) BS EN 12697-22 Procedure B WTS in Air ≤ 1.0mm/103

Please see asphalt product matrix for further information or contact technical:



Rural road improvements

Rural road improvements