Sealing protects concrete driveways from moisture penetration, staining and UV fading, all of which are accelerated by wet Melbourne winters and strong summer sun. Expect the surface to be cleaned and repaired where needed before a suitable sealer is applied, forming a protective barrier that helps maintain colour definition on coloured, stamped or exposed aggregate finishes. A properly sealed driveway is also considerably easier to clean, reducing the buildup of oil stains, efflorescence and general grime.
Reapplication is generally recommended every few years, depending on the sealer type and level of sun and weather exposure. Sealing is a relatively low-cost measure compared to the expense of repairing or resurfacing a damaged driveway.