Thin Surface Treatments are applied to existing pavements to preserve the underlying pavement and to improve motorist satisfaction; they are an important tool in the Pavement Preservation tool box.

Pavement preservation techniques are cost effective and environmentally sustainable strategies designed to extend the life of existing pavements. By applying the “right treatment” on the “right pavement” at the “right time” agencies are able to avoid or delay the high costs of future reconstruction, while still maintaining pavements in acceptable condition. Experience shows that spending $2 on pavement preservation now can delay or eliminate spending $12-$16 on future rehabilitation or reconstruction projects.

Typical Pavement Condition Index:

Source: ISSA website,

Limited budgets mean that spending on infrastructure is not keeping pace with current needs.  Roadways are constantly deteriorating and the finances necessary to continually rebuild them are not available.   The need for cost effective pavement preservation strategies is immediate.  Duncor provides Thin Surface Treatments to help meet this need.

Thin Surface Treatments are also ecologically and socially responsible pavement preservation tools.  Surface Treatments use fewer raw materials and produce significantly less green house gases than conventional mill and pave operations.  Micro-surfacing for example emits approximately 80% less CO2 and uses approximately 80% less aggregate than a typical asphalt overlay.

Treatments Energy (MJ) CO2(tonne) NOx(kg) SOx(kg)
Mill 50mm, Pave50mm 674,925 35 307 9581
Mill 50mm, wma 50mm 477,822 20 161 6708
50mm HIR 566,937 27 239 7473
10mm Micro-surfacing 56,451 2 45 1970


Adapted from Chan et al, 2010, Pavement Preservation-A solution for sustainability

The rapid application time of Thin Surface treatments reduces lane closure time and keeps traffic disruptions to a minimum