Pressure Washing in Dandenong

A proper quote lists: each surface and its approximate area, the method per surface (high pressure vs soft wash), pre-treatments or chemicals used, weed and moss removal, rinsing and tidy-up, and whether resealing or re-sanding is included. It should also state who supplies water and power, and what happens if rain forces a reschedule.

Fresh oil mostly comes out with a degreaser pre-treatment plus hot-water pressure washing. Old oil that has soaked deep into concrete may only fade, not disappear — an honest pro will tell you this before quoting rather than promising full removal. Ask specifically whether stain treatment is included or extra.

Most pros charge either by the hour or by surface area. A single driveway or patio is typically a 1-3 hour job at the low end of a pro's minimum call-out, while a full house exterior wash costs several times more. Get the quote broken down by surface (driveway, walls, deck, roof) so you can drop items to fit your budget.

Once a year is the common rhythm for driveways and house exteriors in temperate climates. Humid or coastal areas may need it every 6-12 months because algae, mould, and salt build up faster. Waiting longer than 2-3 years lets organic growth bind to the surface, which raises the price of the eventual clean.

Light rain is usually fine — surfaces are already wet. Pros avoid freezing temperatures (ice risk on cleaned surfaces and damaged equipment) and heavy storms. In hot dry regions, local water restrictions can limit or ban high-volume outdoor cleaning during drought periods, so check the current rules before booking.

Common products are sodium hypochlorite (bleach) solutions for organic growth, degreasers for oil, and biocides for moss and algae. Used properly they are rinsed off and diluted, but they can harm plants, pets, and ponds during application. Ask the pro how they protect garden beds and where the runoff drains — dirty water should not go into surface-water drains in many jurisdictions.

Usually yes — most state restriction schedules treat high-pressure cleaners as water-efficient devices and allow their commercial use even when hosing driveways with a garden hose is banned. Rules differ by state and restriction stage, so ask the cleaner to confirm compliance for your council area.

Common pricing is $3-$5 per m² or $120-$165 per hour. A typical driveway runs about $155-$365 depending on size, staining, and access, and a full house wash $250-$700. Sydney prices sit at the top of the range.