Pressure Washing in Christchurch

Christchurch's damp, shaded sections grow moss and black algae faster than most parts of the country, and once it takes hold on a driveway or roof it doesn't stop on its own — it spreads, and it gets more slippery every winter. PrestigePro pressure washes driveways, houses, decks, and commercial surfaces across Christchurch and Canterbury, from $100. DRIVEWAYS: THE JOB PEOPLE PUT OFF TOO LONG Concrete, exposed aggregate, pavers, and asphalt each hold dirt differently, and each needs a different pressure setting — too much on exposed aggregate strips the exposed stone, too little on old oil stains does nothing. We assess the surface first and adjust rather than running one setting over everything. Oil stains and tyre marks usually need a pre-treatment soak before washing, not just more pressure. WHY WE SOFT WASH HOUSES, NOT PRESSURE WASH THEM A house wash and a driveway wash are not the same job with a bigger hose. Weatherboards, brick, stucco and cladding can be damaged by the pressure that works fine on concrete — forced water gets under laps and flashings and causes exactly the damp problems you're trying to clean away. We soft wash exteriors: lower pressure, a cleaning solution that does the actual work, then a rinse. It gets mildew and oxidation off without driving water where it shouldn't go. DECKS AND PATIOS NEED THE SAME CARE Timber decking is the other surface where pressure choice matters. Too much strips and roughens the wood grain, which then holds dirt faster next time. Composite decking has its own manufacturer guidance on pressure limits that we follow. Concrete and paver patios can generally take more, but paver joints need attention or the sand washes out and pavers start shifting. MOSS AND ALGAE: TREATING IT, NOT JUST BLASTING IT Blasting moss off a roof or path removes what's visible but leaves the spores that regrow it within a season, especially on a south-facing or shaded surface that never fully dries out. We apply a moss and algae treatment after washing so regrowth is slower — this is the difference between a clean that lasts one summer and one that lasts several. ROOF WASHING Moss and lichen on roof tiles hold moisture against the tile long after rain stops, which is what shortens roof life in Canterbury more than the rain itself. Roof washing at low pressure with the right technique removes growth without lifting or cracking tiles, and treatment afterwards slows the regrowth that would otherwise need another wash in a year or two. COMMERCIAL AND BODY CORPORATE WORK Car parks, loading docks, walkways and building exteriors on commercial and multi-unit properties get pressure washed on a scheduled basis rather than as a one-off, because oil, gum and grime build up continuously with vehicle and foot traffic. We can set up a recurring visit so it's one less thing for a property or facilities manager to track. WHAT TO EXPECT ON THE DAY We inspect the surface, pre-treat anything with heavy staining, wash with pressure matched to the material, and apply moss treatment where it's needed. Fences, paths, steps and retaining walls can be added to any visit — these are often the surfaces people forget until they notice how slippery the steps have become.