DIY or call a professional?
Some of this work you should absolutely do yourself, and we will tell you which. Some of it wrecks render, strips roof tiles or puts you on a wet roof with a wand that kicks. Here is the honest line between the two.
Where we honestly think DIY wins.
No exterior cleaner writes this page, so here it is. If you have a plain concrete driveway, a front path, a porch, some outdoor furniture, a colorbond fence panel or a wheelie bin that has seen better days, hire a machine and go for it. A petrol hire unit from a Pakenham hire yard is about $70 to $100 a day. Fit the rotating surface cleaner attachment rather than trying to do it with the bare wand, keep the tip moving, and work in overlapping passes in one direction. You will get a good result and save a few hundred dollars.
Two things will still catch you. The first is striping. Working with the bare wand leaves overlapping arcs that only reveal themselves when the surface dries, and they are very hard to blend out afterwards. The surface cleaner attachment solves that. The second is regrowth: a hire machine gives you pressure and nothing else, and pressure alone scalps the algae without killing it, so it is back in three to six months. That is covered in detail in our how long does it last guide. For a plain slab you may not care. For a driveway you want looking sharp all year, you will.
Never DIY your roof. This one is not a sales pitch.
Of everything on this page, roof washing is the one we would tell our own family to leave alone. A tiled Pakenham roof at a typical 22 degree pitch has almost no grip once it is wet and soaped, and moss makes it worse again. Add a pressure wand, which kicks back hard enough to shift your balance, and you have the exact recipe behind a lot of the serious home maintenance injuries in this country every year. Falls from height are consistently one of the biggest causes. Under the Victorian Occupational Health and Safety Regulations 2017, work at height like this requires proper fall prevention, which in practice means anchor points and a harness, not a ladder and hope. And to be clear about the ladder: even one that meets AS/NZS 1892.1, the portable ladder standard, is rated for climbing. It does nothing for you once you are off it and standing on a wet, soaped, mossy tile.
The damage side is just as bad. Concrete tiles, which is most of Pakenham’s 1990s to 2010s housing stock, have a surface glaze. High pressure takes it off, and once it is gone the tile is porous, holds water, and grows moss faster than it did before you started. You will also see the grit in your gutters afterwards, which is the tile itself washing away. And pressure directed up under the tile laps puts water straight into your ceiling cavity. A proper roof clean and treatment is a low-pressure soft wash with a biocide, done off anchor points. It costs $600 to $1,000 on a single-storey Pakenham home, and that is a lot cheaper than a ceiling repair or an ambulance.
Render is the one people wreck without noticing.
Pakenham’s newer estates, through Officer, Cardinia Lakes, Lakeside and Pakenham East, are overwhelmingly rendered. A hire petrol washer runs 2,500 to 3,000 PSI. Acrylic render texture coat starts breaking down a long way below that.
What makes this the sneakiest job on the list is that the damage does not look dramatic on the day. You get a slightly lighter, slightly smoother patch where the texture has been shaved off, you think you have just cleaned it well, and six months later that patch is weathering completely differently to the wall around it. Now you are looking at a re-render or a repaint of the whole elevation. The other half of the problem is invisible: pressure aimed into a control joint, a window reveal or a weep hole drives water into the cavity behind the render, and that is a much bigger conversation. Render needs a soft wash, which is detergent doing the work at roughly garden hose pressure. Our pressure vs soft washing guide sets out which surface gets which method.
Does DIY actually save money?
On a small plain concrete job, marginally. Hire is $70 to $100 a day, plus fuel and a detergent, so call it $110 all in against $180 to $320 for a professional driveway clean. You save maybe $150 and spend most of a Saturday. If you like the work, that is a fair trade and we would not argue with you.
It stops adding up the moment repair risk enters the picture, because no hire agreement covers damage to your own property. One cracked roof tile that leaks in June, one stripped render patch, one striped driveway, and the saving is gone several times over. It also stops adding up on scale: a double-storey house wash from a ladder is not a weekend, it is a fortnight of weekends, and the ladder is the same fall risk as the roof. Full price ranges for every job are on our pricing guide.
Worked example: a Lakeside homeowner’s Saturday.
A Lakeside owner hires a 3,000 PSI petrol unit for $85 to do the aggregate driveway and the rendered front elevation. The driveway comes up reasonably, though with faint arc striping because he used the wand. The render looks great wet. Two months later there is a visible pale band at chest height along the front wall where the texture coat has been shaved, and the driveway is greening again because there was no biocide. The repair quote on the render elevation is around $900. The professional version of that same job, a treated driveway clean at about $250 and a single-storey soft wash at about $450, was $700. That is the pattern we see most often, and it is why we would rather you DIY the concrete and let someone else touch the render.
DIY vs professional: your questions.
Can I pressure wash my own driveway in Pakenham?
Yes, a plain concrete driveway is the most DIY friendly job there is, and we will say so. Hire a petrol washer for around $70 to $100 a day, fit a rotating surface cleaner rather than working with the wand, and keep the tip moving. The two things that catch people out are striping, which happens when you work with the bare wand and leave overlapping arcs, and regrowth, because a hire machine gives you pressure but no biocide, so the green is back in three to six months. For plain concrete it is a fair weekend job. For render, roofs and exposed aggregate it is not.
Should I pressure wash my own roof?
No. This is the one job we tell every Pakenham homeowner to leave alone, and not because we want the work. Falls from height are one of the biggest causes of serious injury in Australian home maintenance, a wet tiled roof at 22 degrees pitch has almost no grip, and the recoil from a pressure wand is enough to move you. Beyond the fall risk, high pressure strips the surface glaze off concrete tiles and forces water up under the laps into your ceiling. Roof cleaning needs anchor points and fall protection under the Victorian OHS Regulations and a soft wash method, not a ladder and a hire machine.
Will a hire pressure washer damage my render?
Very likely, yes. A typical hire petrol unit runs 2,500 to 3,000 PSI, and acrylic render texture coat starts to break down well below that. The damage often does not look dramatic on the day. You get a slightly lighter patch where the texture has been shaved off, and it becomes obvious months later when that patch weathers differently to the rest of the wall. Worse, high pressure into a control joint or around a window reveal drives water into the wall cavity. Render must be soft washed with detergent at garden hose pressure, not blasted.
Is it actually cheaper to DIY a pressure wash?
On a small plain concrete job, marginally. Hire is around $70 to $100 a day plus fuel and detergent, so call it $110, against roughly $180 to $320 for a professional driveway clean in Pakenham, and you spend most of a Saturday on it. That is a real saving if you enjoy the work. It stops being a saving the moment there is any repair risk. A cracked roof tile, a stripped render patch or a striped driveway costs several hundred to fix at minimum, and no hire agreement covers you for damage to your own property.
What can I safely DIY between professional cleans?
Plenty, and it genuinely extends the interval. Sweep leaf litter off the driveway before it mats down over winter, because wet leaves hold moisture and tannin against the concrete and cause both staining and algae. Trim overhanging branches back so the surface gets drying sun. Keep sprinklers and downpipe discharge off render walls and off the drive. Hose the dust off a north facing render wall after a long dry spell. All of that is free, safe from the ground, and it is the difference between an annual clean and a two yearly one.
Areas we cover.
Do the concrete yourself. Let us do the render and the roof.
Insured, soft-wash trained, harnessed for height. Free written quote, no obligation.