It's one of the most common questions we get asked by homeowners in Manly NSW 2095 and across the Northern Beaches: how often does a driveway actually need to be pressure washed? The honest answer is "it depends" — but there are clear, practical factors that tell you where your driveway sits on that scale.
The three biggest factors
Coastal proximity. Salt-laden air accelerates algae and lichen growth on porous concrete and pavers. Driveways within a few streets of the beach — think Freshwater, Queenscliff or Manly's own foreshore — often need cleaning every 12 months, while driveways further inland can often stretch to 18-24 months.
Shade and tree cover. Shaded, damp driveways under established trees, common around Seaforth and the bushland edges of the Northern Beaches, grow moss and algae faster than driveways that get direct sun most of the day, regardless of coastal distance.
Surface type. Unsealed concrete, sandstone and exposed aggregate are porous and trap grime, so they need more frequent attention than smooth, sealed pavers or stamped concrete that's been properly sealed after its last clean.
A simple decision guide
If your driveway is within a couple of streets of the ocean or harbour, shaded for a large part of the day, or unsealed, plan on an annual clean. If it's set back from the water, gets good sun, and is sealed, you can generally wait 18 to 24 months — just keep an eye out for green or black patches, which are a slip hazard as well as an eyesore.
Sealing your driveway straight after a professional clean is one of the best ways to extend that interval, since it stops dirt and spores from colonising the surface pores in the first place. Our driveway and path pressure cleaning service includes an optional post-wash seal for this reason.
For facades and painted surfaces, the calculus is a little different — see our guide on why salt air stains Manly facades, and our comparison of soft wash versus pressure wash for painted surfaces. We service driveways right across the area, including Balgowlah and Seaforth. More general questions are answered on our FAQ page. Strata committees managing larger complexes may also want to look at Sydney strata cleaning specialists from our parent company, Pro Clean Corp.
