Developed in line with Transport for Scotland methodology, this low void, high bitumen
content stone mastic asphalt (SMA), is ideal for sites where safety and reduced noise are
paramount. Tufflex® D is a more durable product which provides whole life cost savings.

Compared to traditional asphalt surfacing, Tufflex D offers texture, high deformation resistance and a
very low air void content. The solution also delivers National Highways’ highest level of wheel rut resistance,
level three. Tufflex D’s design uses specialised binders and incorporates best-in-class polymer technology.
With its optimum surface texture of approximately 1.1mm and designed low voids, it effectively protects
the surface it covers from water ingress.

Available in 6mm, 10mm and 14mm nominal sizes, Tufflex D can be laid between 25mm and 50mm
thick using conventional asphalt pavers with a6-10 tonne roller. Installation should be strictly in accordance with BS 594987. Special attention should be given to placement and formation of joints. To enhance early life skid resistance, it is advisable to apply 1-4mm grit or coated grit on the first pass of the roller with a dedicated attached grit box.


  • A best-in-class flexible polymer modified Bitumen (PMB)
  • Suitable for any class of road network
  • Cost-effective over the whole life
  • Quick installation
  • Prevents water ingress
  • Highly sustainable and durable
  • Offers improved performance over conventional asphalt
  • 100% recyclable

Available with the following options:


  • Trunk roads
  • Urban roads
  • Local authority network

Tufflex® D technical data

Material property Test specification Typical results
Design void content BS EN 12697-6 Vmin 1.0% – Vmax 5.0%
Binder drainage BS EN 12697-18 Beaker Method < 0.3%
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: