Otta Seal

An Otta Seal is a type of bituminous surface treatment formed by adding graded aggregate to a soft bituminous binding agent.


The Otta Seal which was developed by the Norwegian Road Research Laboratory is best suited to roads with low traffic volumes.

Australian Councils

The following Australian Councils are using Otta Seals:

Surface Detail

As the photo below shows, the stone used in an otta seal is much more variable in size than the aggregate used in a standard spray seal.


Additional Photos

More Otta Seal photos can be found here.

Related Pages

External Links & References

  1. Wikipedia
  2. Google Search
  3. Narrandera Shire Council Media Release
  4. Replacing Waste Oil as a Dust Minimisation Technique - Jeff Waters
  5. Sustainable roads services in rural setting - Krishna Shrestha
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