High performance materials deliver a multi-layer crack resisting binder/surface course that is particularly suited to overlaying concrete carriageways.

Compared to traditional asphalt surfacing, Tufflex® offers high deformation resistance and a low air void
content. The solution also delivers National Highways’ highest level of wheel rut resistance, level three. Its design uses specialised bitumens and incorporates best-in-class polymer technology to give it a flexibility
that enhances fatigue resistance by absorbing traffic vibration. With its relatively low surface texture and designed low voids content, Tufflex effectively protects the surface it covers from water ingress.

It is available in 6mm, 10mm, 14mm and 20mm nominal sizes and can be laid between 30mm and
150mm thick using a traditional asphalt paver with a 6-10 tonne roller. As a single layer application
Tufflex can halve the installation time of traditional materials, reducing disruption to local services and
traffic. This can be further enhanced by producing the material using Heidelberg Materials’ era 140 warm mix
asphalt process. Special attention should be given to compaction at the joints, which should be cut and
painted with a bituminous joint paint to maintain resistance to the tensile stresses of turning vehicles.
Installation should be in accordance with BS 594987.

Enhanced fuel resisting properties.

Tufflex® XD
Tufflex® XD is an extra dense solution with a higher bitumen content for sites with lower texture depth requirements.

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



  • A  best-in-class flexible polymer modified binder (PMB)
  • Road engineers will benefit from the option of a multi-layer crack resisting asphalt solution
  • Cost-effective over the whole life
  • Quick installation – single layer application
  • Prevents water ingress
  • Highly sustainable and durable, and offers improved performance over conventional asphalt materials
  • Increased flexibility

Available with the following options:


  • Overlay of concrete carriageways
  • Urban roads
  • Rural roads
  • Industrial areas

Tufflex technical data

Material property Test spec Typical result
Design void content BS EN 12697-6 ≤ Vmax 5.0%
Water sensitivity BS EN 12697-12 Method B (i/C) BS EN 12697-23 ≥ 80%
Binder drainage BS EN 12697-18 Beaker Method < 0.3%
Indirect tensile stiffness modulus BS EN 12697-26 Annex C >5,500 MPa (Tufflex® HD
RTPD (wheel tracking) BS EN 12697-22 Procedure B WTS in Air ≤ 1.0mm/103
Fatigue (ITFT*) BS DD ABF ≥ 1000000 cycles to failure @ 100µstrain

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


London Gateway

London Gateway