Spray seals provide a cost effective flexible layer over existing road surfaces or new pavements, to prevent water undermining the road pavement and provide a long road life, with nearly 70% of Lake Macquarie roads have been sealed in this manner.
This treatment involves spraying a film of bitumen across the road surface to seal minor cracking. The majority of Council’s spray seals contain a rubber compound to improve flexibility and reduce cracking. Bitumen based treatments are also known as flexible pavements because they can move and spring back under stress without cracking.
This is essential to prevent traffic damage, to prevent water undermining the road pavement and provide a long road life. Approximately 90 per cent of Australia’s sealed road network area is surfaced with sprayed seals.