Pressure Cleaning Services SA 2026 - Get Quotes

Surface by Surface, What the Job Involves

Driveways and paths are the most requested job in South Australia and the most forgiving. Plain broom finished concrete carries no coating to strip and no decorative element to damage, so it tolerates genuine pressure provided the operator keeps sensible distance and works with a rotary head rather than a wand. Oil, tyre rubber and general grime all respond, and detailed stain guidance sits at concrete and paver cleaning. Plain concrete is the most forgiving surface on any property here. It carries no coating to strip and no decorative element to damage, which is why it tolerates a rotary head at full working pressure. Where a slab has cracked or reached the end of its life, replacing it achieves what no amount of washing will, and that work is covered at concrete driveways.

Decorative concrete is the exception and Adelaide has a great deal of it. Stencilled concrete is particularly common across the suburbs and it is the finish most often ruined, because the pattern is printed into a tinted topping that a jet removes permanently along with the colour. Exposed aggregate loses stones from its cement matrix under the same treatment, and neither can be repaired without recoating the whole area, Recoating an entire driveway costs many times what the wash did, which is why naming the finish matters more than naming the suburb, with installation covered at exposed aggregate concrete and stencilled concrete.

Patios and entertaining areas mix surfaces on one job more often than not. A single outdoor area can combine plain concrete underfoot, pavers along an edge, a timber deck section and a rendered wall behind it, which means four different pressures and in one case a chemical approach rather than a mechanical one. Quoting that accurately needs somebody to look at it rather than price it by area, and surrounding works sit with paving and pathways.

Timber decking needs low pressure and a fan tip regardless of how sound it looks. The temptation to turn the pressure up on grey weathered boards is exactly the wrong instinct. Softwoods raise their grain and splinter under force, hardwoods fare better while still marking, and the water blasting technique that cleans a driveway will leave visible lines across a deck that no amount of sanding fully removes. Oiling or staining afterwards protects the restored surface.

Fences cover large areas quickly and reward the effort visibly. Weathered grey timber returns close to its original colour, which surprises owners who assumed the fence needed replacing, while Colorbond and rendered fencing need a gentler wash and different chemistry entirely. Both sides matter, and a price covering only the visible face is doing half the job. Weathered grey timber returning to colour is the most visible result in this trade. Repainting afterwards sits with deck and fence painting.

Building exteriors belong in the soft wash category without exception, meaning low pressure with a cleaning solution doing the work. Render, brick, weatherboard and sheet cladding all suffer when water is driven behind them, and mould on a shaded southern wall needs killing rather than merely rinsing off or it returns within months. Cladding identification and the chalk test that decides between washing and repainting are covered at house washing. Running a hand across the wall and checking your palm takes ten seconds.

Roofs and pool surrounds each bring their own constraint. A roof carries height risk, coating that strips under pressure and growth that needs treating rather than blasting, with method covered at roof cleaning, while a pool surround demands grip underfoot and chemistry that will not disturb the water, since children with wet feet are the primary users, with surround construction at concrete pool surrounds. Salt chlorinated pools add meaningfully to the salt load on nearby paving and any adjoining masonry, which is worth knowing on an older property.

Equipment and Technique

Understanding what separates professional equipment from a hardware store unit explains why results differ so much. Commercial machines deliver fifteen to twenty five litres per minute against five to eight from a consumer unit, and that flow rate predicts how quickly a large area gets covered far better than any pressure figure does. Two machines quoting identical pressure can differ enormously in how long a driveway takes. Ask about flow rate rather than pressure alone. It is the number that predicts how long your driveway will actually take.

The rotary surface cleaner is the piece of equipment that most changes an outcome on flat areas. It is an enclosed rotating head that holds a constant distance from the slab and overlaps its own path, producing an evenness across a driveway that no handheld lance matches. The banding people notice on freshly cleaned concrete once it dries is the sweeping arc of a wand, and under the flat clear light of an Adelaide summer it shows up mercilessly on a pale slab.

Hot water capability dissolves oils and greases that cold water alone cannot shift, which is the clearest single difference between a general operator and one equipped for demanding work. Professional hot water machines reach eighty to ninety degrees, and heat achieves considerably more on hardened grease and aged oil than raw pressure ever will. Where those marks are the reason you are calling, ask about it directly. Not every operator carries hot water capability, so ask before booking.

Nozzle selection does more damage than machine choice in inexperienced hands. A turbo nozzle concentrates force into a rotating point and will carve a visible spiral into soft concrete, render or sandstone within seconds, so its place is on sound hard surfaces and nowhere near decorative or heritage material. Experienced operators know when that intensity is appropriate and when a wide fan is the only defensible choice. A spiral scar in a slab is permanent. Grinding is the only remedy and it costs many times what the clean did.

Standoff distance is the technique that separates a careful operator from a careless one. Delivered force falls away sharply across a gap, which means the same machine can be aggressive or gentle depending entirely on how the wand is held, and watching somebody work tells you more than any equipment list. An operator pressing the nozzle close to get a result faster is trading your surface for their time. Watching the first few minutes of work tells you a great deal.

Elevated access changes both the price and who can do the work. Two storey walls, roofs and high fencing need extension poles, a platform or harness work depending on the surface, and an operator on a ladder holding a wand is fighting substantial reaction force in a position that offers no margin for error. Height and equipment safety obligations sit with SafeWork SA. Establish how height access will be managed before any work begins.

Cleaning Chemicals, Treatments and Sealers

Chemistry does more of the work than most people assume and it is what makes a result last. Biological growth including mould, algae and lichen, the grey green crusty patches that root into a surface, needs killing rather than removing, because rinsing the visible growth away leaves the organism in the pores to return within months. A treatment that kills it and is then rinsed holds for years instead. Ask which product will be used and how long it stays on the surface.

Pre-treatment shortens the time a product must sit on a surface to work, which the trade calls dwell time, and it reduces water use at the same time. That matters more in this state than in the wetter ones, since every litre saved is a genuine consideration rather than an incidental benefit. It also improves the result on anything biological, because the growth is dead before the rinse begins. Using less water for a better outcome is an unusual combination.

Degreasers handle oil and grease where pressure alone achieves very little. Pre-treatment followed by hot water addresses even heavy buildup on a carport slab or under a vehicle, and the combination of product and heat is what shifts contamination that has been absorbed rather than merely deposited. Naming the cause when you request a quote lets an operator bring the right chemistry. Say what has already been tried on the mark, since it rules options out.

Product selection needs to suit the surface as much as the contaminant. Acidic rust and salt removers work well on concrete and cause real damage on natural stone, alkaline cleaners suit organic staining, and a solution safe on a driveway can mark a rendered wall or disturb pool chemistry. Safety data sheets should be available for anything being applied, and an operator who cannot produce one is worth questioning further. Chemistry that suits concrete can ruin natural stone entirely.

Sealers are a separate service with their own timing and their own trade offs. A coated surface holds spills on top long enough to wipe away, resists salt bloom reaching the surface and washes up more easily next time, at the cost of a return visit and on some products a darker appearance. Matching sealer characteristics to the surface and the intended result is what determines whether it was worth doing. Sealing a sound surface adds cost without adding much. Where the existing coating has failed or the surface is porous and staining readily, the case is considerably stronger.

Slip resistance deserves specific mention around pool surrounds and shaded paths. Some sealers leave a smoother, glossier finish than the bare surface beneath and become noticeably more slippery once wet, which is a genuine hazard where children and older residents use the area. Anti slip additives or a product formulated to retain texture are worth specifying rather than assuming. Ask to see the slip rating before the product is chosen.

Salt Damp and Bore Water, the Two South Australian Problems

Salt damp affects more housing here than in any other state and it outranks every other consideration on an older masonry property. It is moisture rising through porous stone, brick and mortar from the ground, carrying dissolved salts that crystallise as the water evaporates at the wall face, and crystal growth exerts real physical force inside the material. Look for it in a band that runs from about half a metre to a metre up from the ground. That mechanism explains everything else about how it behaves. Moisture carries the salts up, evaporates at the face, and leaves crystals that keep growing.

Look for a white crystalline bloom, mortar soft enough to rub away with a thumb, stone flaking or powdering off in layers, paint bubbling near the base of a wall and a tide mark where the affected zone ends. Adelaide carries so much of it because a great deal of the older housing is solid masonry in bluestone, sandstone and early brick built before damp proof courses were standard, on soils with high salt content. The age and construction of a house predict it better than the postcode.

Washing a salt affected wall makes the problem worse in two distinct ways, which is why this section sits ahead of method. Pressure removes stone and mortar already weakened from within, turning a maintenance job into a repair bill, and adding water to masonry struggling to shed moisture feeds the mechanism doing the damage. A wall showing active salt damp needs assessment before anybody cleans it, with treatment covered at salt damp treatment. Somebody who brings it up before quoting has done you a service.

Ground level against a wall is the contributor people overlook entirely. Garden beds built up over decades, paving laid over an original path at a higher level, concrete poured against footings and mulch piled against the base all raise the effective ground level and bridge whatever protection the wall originally had. A wall that behaved perfectly for eighty years can begin failing within a few seasons of a landscaping project that seemed harmless. Check whether the soil now sits above the internal floor level.

Bore water is the second South Australian problem and it explains a great deal of paving staining. Water drawn from many local bores carries high levels of dissolved minerals and salts, and every sprinkler cycle deposits a fresh load onto whatever the spray reaches, building a pale crusty film over a season. Cleaning removes it while the sprinkler keeps replacing it, and the marking usually traces the arc of the throw exactly. System adjustment sits with irrigation and garden watering systems.

Adjusting the heads is worth more than cleaning more often. Moving a sprinkler back from a path, changing the arc so it waters the garden rather than the paving, or switching an affected zone to drip irrigation removes the cause rather than the symptom, and an hour spent on it beats an annual clean. Bore water is also a poor choice for the washing itself on any light coloured surface. Mains or tank water avoids that problem entirely.

Efflorescence on newer concrete is a milder relative and worth telling apart. It appears as a surface bloom that brushes off leaving sound material underneath, commonly on paving in its first year or two, and it settles as the material dries out. Salt damp leaves crumbling mortar and eroding stone and does not resolve on its own, so the thumb test on the mortar separates the two quickly. Efflorescence on newly laid paving settles within a year or two. Persistent blooming on paving frequently points to drainage, covered at stormwater drainage.

Preparing for the Visit

Twenty minutes spent clearing the area beforehand usually saves more than that in operator time, and it removes the risk of something being damaged or moved without your knowledge. Outdoor furniture, pot plants, barbecues, bikes and children's equipment all need shifting off the surfaces being cleaned, and heavy items that cannot be moved should be pointed out so the operator can work around them. Twenty minutes of clearing beforehand saves more than that on the day. It also removes the risk of something being moved or damaged without your knowledge.

Anything steel left standing on concrete is worth shifting well before the visit. A wrought iron setting, a trailer jockey wheel or a stack of star pickets will otherwise keep bleeding rust into the slab whatever the cleaning achieves, and treating the stain while the source remains simply means repeating the job next year. Shift anything steel off the slab well before the crew arrives.

Established gardens close to a wall or driveway deserve a conversation beforehand. Pre-wetting foliage dilutes chemical contact and some operators specify plant protection as the client's responsibility, which matters more through a dry South Australian summer when plants are already stressed and less able to shrug off an incidental splash. Confirm whose responsibility plant protection is when booking.

Windows, doors and any gaps in cladding need identifying before water is directed anywhere near them. Older weatherboard and stone cottages deserve particular attention, since gaps around frames, under sills and at board ends offer water a path into the wall cavity that a modern brick veneer home does not, and a leak discovered afterwards is difficult to attribute. Masonry repair on an older wall sits with brick repair.

Water and power access determine whether a crew can complete the visit at all. Standard tap connections suit most residential work while larger jobs may need a higher flow point or multiple taps, and confirming what is available, including whether a rainwater tank can be drawn from, avoids a wasted attendance. Mention any available rainwater tank when you request a quote.

Pets need securing indoors or well away from the work for its duration. They react badly to the noise as much as to any chemical, and a dog that bolts through a side gate left open by a crew is a considerably more common problem than any chemical exposure ever is. Agree who is responsible for gates and access on the day.

Pressure Cleaning Across South Australia

Adelaide's inner and western suburbs hold the highest concentration of solid masonry and therefore of salt damp. Bluestone and sandstone villas, cottages and terraces through North Adelaide, Unley, Norwood, Prospect, Thebarton and Port Adelaide combine porous stone, lime mortar and saline soils, which makes the base of the wall the first thing worth inspecting on any quote. Narrow allotments limit what equipment can reach the rear of a property.

Work in the northern and southern growth corridors bears little resemblance to that. Brick veneer, acrylic render, exposed aggregate and stencilled concrete dominate, access is straightforward, surfaces are generally sound and method matters more than access. What owners usually want removed there is dust rather than anything biological. Repainting after a wash sits with exterior house painting.

Nowhere else in South Australia grows as much on its surfaces as the Hills. Higher rainfall, dense tree cover and cooler shaded conditions mean mould and moss establish on paths and southern walls in a way they rarely do on the plains, and intervals there run noticeably shorter than a few kilometres downhill. Note any trees hanging over the property in your first message.

Coastal areas from Glenelg through the Fleurieu and the peninsulas add windblown salt and sand. Salt settles on walls, glass and hardware and redissolves with every dew, which accelerates corrosion of fixings and degrades coatings faster than inland exposure, so washing there protects hardware as much as appearance. Window fittings and hardware deserve attention on coastal properties.

The Barossa, the Riverland, Mount Gambier and the regional towns combine period stone housing with widespread bore irrigation. Salt damp questions apply exactly as they do in Adelaide, mineral staining from sprinkler throw is a more frequent complaint than organic growth, and hot dry summers lengthen the intervals between cleans considerably. A stone wall demands identical caution in Tanunda and in Norwood.

What Pressure Cleaning Typically Costs in SA

A standard residential driveway of up to fifty square metres generally runs $150 to $300, with larger areas, heavy staining or textured surfaces sitting above that. Patio and paved area cleaning is usually quoted at $3 to $8 per square metre, which lets you check a lump sum against your own measurements before agreeing to anything. Stepping the area out is close enough for an initial figure.

Timber decking runs higher per square metre at $5 to $12 because the work is slower and more careful. Low pressure, a fan tip and attention to the grain direction all take time that a driveway does not, and the price reflects hours rather than area alone. Fencing is generally quoted by the lineal metre at $8 to $15 depending on material and whether both sides are included. Confirm whether both faces of the fence sit inside the price.

A single storey house wash typically sits between $300 and $600 for walls and eaves, with two storey work above that because access rather than area drives it. Stone and heritage properties price higher again, since low pressure equipment, test patches and care around lime mortar all add hours, and where salt damp is present the assessment comes first and the cleaning scope may change entirely. Request a separate figure for the stone faces.

Roof cleaning is generally quoted at $4 to $10 per square metre, moving with pitch, height, material and how much growth is present. Access is the larger variable, because a low single storey roof and a steep two storey one of identical area are genuinely different jobs once harness work and sometimes a platform are counted. State the storey count and roof pitch when you first enquire.

Sealing and stain treatment are separate services at separate prices, and both are worth settling at quoting stage rather than discovering later. Sealing also carries a genuine seasonal window here, since a January afternoon exceeds the maximum surface temperature most products specify, so plan clean and seal projects for spring or autumn with a day or two between the stages. Leave the sealing date loose enough to move with conditions.

What to Look Out For

Be wary of any quote on an older masonry property that says nothing about the base of the walls. Salt damp affects a large share of Adelaide's stone and early brick housing, washing an affected wall accelerates the damage, and an operator who has not looked has skipped the most consequential question on the site. Find out what they observed down at the base of the walls.

Treat a proposal to use high pressure on decorative concrete, timber, render or older stone with real caution. A jet strips the tinted topping from stencilled work permanently, shakes stones out of exposed aggregate, raises the grain on decking and removes lime mortar in seconds, and none of it is visible while the operator packs up. Have the intended method recorded in writing on the quote.

Ask where the water is going before comparing prices. Stormwater discharges untreated to the gulf, acidic products are common on South Australian paving, and liability for pollution attaches to whoever causes or permits it rather than resting solely with the person holding the hose. Ask how the runoff will be contained or where it will be directed.

Check the water source and volume on any sizeable job. This is the driest mainland state, permanent saving measures apply regardless of storage levels, and an operator who can draw from a tank or who recovers and reuses is offering something of real value. Name the water source available when you first enquire.

Verify insurance and check licensing for any building work that follows. Building work above the statutory threshold requires a licensed contractor, checkable through Consumer and Business Services, and statutory consumer guarantees apply regardless of contract terms, enforced by the ACCC. Ask in writing for confirmation that the policy has not lapsed.

How to Get Useful Quotes

Take the dimensions of each area and pass on the square metres. Treat the driveway, paths, patio, decking and fencing as separate items, since your own measurements let you test a rate against a lump sum and see whether the two agree. Per square metre, steps consume far more time than open paving does.

Identify the surface and the finish on each one. Plain concrete, stencilled, exposed aggregate, pavers, bluestone, timber, render or metal all dictate the approach ahead of every other factor, and a close photograph settles it where you cannot tell. If a single area combines two materials, say so.

Photograph the base of any older masonry wall along with the elevations. That single set of images tells an operator whether salt damp is present before anybody quotes a method, and it is the most useful thing you can send on a period property. Shoot them in daylight, not in late afternoon shadow.

Describe each mark and give an approximate age. Oil, rust, bore water minerals, salt bloom and organic growth each need their own chemistry and dwell time, and a two month old stain and a six year old one are separate propositions. Even an approximate year helps an operator select the right chemistry.

Say whether the property runs on bore water and whether a rainwater tank is available. The first explains a great deal of the marking on South Australian paving, and the second may remove the water question from the job entirely. Neither takes long to establish ahead of quoting.

Require every quote to name the areas and rate, the method and pressure for each surface, whether stain treatment and sealing are included, how runoff will be handled and what insurance is carried. With those five settled the quotes compare properly, and general upkeep between cleans sits with handyman services. Method and the sealing allowance are where quotes usually diverge.