4.2 Purpose of Sprayed Seals
Sprayed seals aim to:
- provide a durable, safe and dust-free surface
- minimise the rate of pavement wear and whole-of-life maintenance costs
- protect the base from the effects of traffic and the environment by preventing moisture ingress into the pavement structure
- provide adequate skid resistance over the life of the surfacing.
A pavement is resealed when the condition of the existing surface requires the application of new binder and aggregate to restore one or more of the functions of the original seal. This provides a new surfacing and also re‑waterproofs the pavement. It is usually conducted as part of a periodic maintenance program.