Your house is filthier than you reckon.

Soft washing uses low water pressure combined with a specialised cleaning solution to kill mould, algae and grime at the root, whereas pressure washing relies purely on high-pressure water to physically blast dirt off. For render, weatherboard, brick and Colorbond common across Sydney homes, soft washing is gentler and less likely to cause damage like cracked render or forced water intrusion behind cladding. It also tends to keep surfaces cleaner for longer.

Yes, high pressure directed at render, painted weatherboard or older brick can strip paint, crack render, or push water behind cladding and into wall cavities, which is a common issue reported in older Sydney homes. This is exactly why most professional house washing services default to soft washing for these surfaces. If a company only offers pressure washing for your render home, it's worth asking more questions.

A typical single-storey home in suburbs like Parramatta or Penrith usually takes a few hours from setup to finish, while larger double-storey homes or properties with extensive render, fencing and paths can take the better part of a day. Heavy mould buildup, common in shaded homes near bushland in the Hills District or Blue Mountains foothills, can add extra time for treatment to work. Your provider should give you a time estimate when quoting.

Yes, regular house washing is one of the main defences against salt spray buildup on homes in ocean-facing suburbs like Bondi, Cronulla, Manly and the Northern Beaches, since salt accelerates corrosion on metal fixtures and staining on render and glass. Homes closer to the coastline generally need washing more frequently than those further inland. Leaving salt residue untreated long-term can shorten the life of paintwork and metal trims.

Most professional house washing uses a diluted, biodegradable sodium hypochlorite-based solution designed for exterior surfaces, applied at concentrations safe for gardens once rinsed and diluted. Reputable Sydney operators will pre-wet garden beds, cover sensitive plants, and rinse thoroughly afterward to protect lawns and pets. Always ask your provider what products they use and how they protect landscaping before the job starts.

No, you don't need to be home as long as the cleaner has access to an outdoor tap, side gates and any areas needing attention, which many Sydney customers arrange in advance for convenience. It's a good idea to move outdoor furniture, secure pets and let neighbours know if shared driveways or fences are involved. Most companies will confirm access details with you before the appointment.