Pressure Washing in Kowloon

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.

Yes. Too much pressure or the wrong nozzle can etch concrete, blast mortar out of brick joints, splinter timber decking, strip paint, and force water behind siding or render. Roof tiles are especially vulnerable. Ask the pro what PSI and nozzle they plan to use per surface, and whether they soft wash delicate areas.

Four things drive the spread: surface area and condition (heavy staining doubles the time), access (upper storeys, tight side passages), method (soft washing with chemicals costs more than a quick rinse), and what is bundled (resealing, weed treatment, gutter clear-out). A cheap quote is often just a rinse with no pre-treatment — clarify the scope before comparing numbers.

Safe at high pressure: concrete, block paving, natural stone (with care), brick in good condition, metal fences and gutter exteriors. Needs low pressure or soft washing: painted surfaces, render, timber decking, vinyl or fibre-cement siding, roofs, and old or repointed brickwork. Never pressure wash: single-glazed windows at close range, electrical fittings, or asbestos-containing materials.

Renting a machine costs a fraction of a pro visit, but consumer machines are slower, and the main risks are damage (etched concrete, stripped paint) and injury — a 3000+ PSI jet can cut skin. DIY makes sense for a small, flat concrete area. Hire a pro for two-storey walls, roofs, timber, render, or anything needing ladders or chemicals.

Driveway cleaning in Kowloon is usually priced by area and condition. A standard single-car driveway sits at the bottom of the local range; a large or heavily stained double driveway with weed growth and oil marks can cost two to three times more. Ask whether resealing or re-sanding block paving joints is included — that is often a separate line item.

Generally no — external walls are common property managed by the owners' corporation or management company. Individual owners hire pressure cleaners for private areas: rooftops they own, village house exteriors, garden or podium areas, and car parking spaces.

October to February — the dry season. Cleaning during the humid months (especially the March-May damp season) gives the shortest-lived results because mould regrows within weeks on damp surfaces.