Should You Rent a Pressure Washer, or Hire It Out?
Rent one for flat concrete. Don't rent one for your house or your roof. That's the whole answer, and it's not a sales pitch — it's about which surfaces can take pressure. A driveway, a sidewalk, or a patio is hard, flat, and forgiving, and a rented machine with a surface-cleaner attachment will do a genuinely good job on one. Siding, roofing, decks, and painted trim are none of those things, and the damage a rented machine does to them is usually permanent and always more expensive than the job you were trying to save money on. The mistake isn't renting the machine. It's pointing it at the wrong thing.
What it's genuinely good at
Concrete. A driveway, a sidewalk, a garage floor, a patio slab. Concrete is one of the few exterior surfaces where high pressure is the correct tool, and a homeowner with a rented machine can get a real result. Two things make the difference between a good outcome and a striped mess: use the surface cleaner attachment rather than the open wand — it's the round housing that lays pressure down evenly instead of in arcs — and pre-treat with a cleaning solution and let it sit before you rinse, because the green and black on concrete is living growth that has to be killed or it's back in a few weeks.
The four things not to point it at
Your roof. Pressure strips the granules off asphalt shingles. Those granules are the roof's UV protection, they don't grow back, and doing this voids most manufacturer warranties. Roofs get low pressure and a solution — see soft washing and shingles.
Your siding. Vinyl siding is lapped to shed water running down it. A pressure washer aimed upward drives water behind the panels and into the wall cavity, where it has no way out. The damage shows up months later as a mildew smell or a stain on an interior wall, long after anyone connects it to the day you washed the house. Siding gets soft washed.
Wood decks and fences. Wood is soft. Too much pressure gouges the grain, raises fibers, and leaves a furry, splintery surface that then holds water and rots faster.
Windows, screens, light fixtures, and anything painted. Seals blow, screens tear, paint lifts.
The real cost of the DIY day
The rental is the small part. Add the deposit, the tips you'll buy, a jug of detergent, gas, the drive to pick it up and the drive to take it back, and a day you weren't going to spend that way — and the gap between doing it yourself and having it done is smaller than the rental sticker suggests. That's fine when it's a driveway on a Saturday you were free anyway. It's a bad trade when it's a two-story house, because now you're also on a ladder with a machine that kicks.
The other cost people don't price in is the second attempt. Striped concrete, a streaked house, or algae that came straight back because nothing killed it means doing the whole thing again — or paying someone to fix a surface that's now harder to fix than it was.
The straight recommendation
If it's flat and it's concrete and you have a free Saturday: rent it, get the surface cleaner, pre-treat it, and you'll do fine. If it's a roof, siding, a deck, anything two stories, or you'd be on a ladder: don't. Not because you couldn't, but because the failure mode is expensive and permanent and the job takes us a couple of hours. We publish our prices on the pricing page so you can make that comparison honestly, without calling anybody.
Common questions
Is it cheaper to rent a pressure washer or hire someone?
For a driveway or patio, renting is usually cheaper if your Saturday is free — add the deposit, tips, detergent, gas, and two trips to the rental counter and the gap narrows, but it's still less. For a house or roof it's rarely the better deal once you account for the risk of damage and the odds of having to do it twice.
Can I pressure wash my own house?
You can, but you shouldn't with a pressure washer. Vinyl siding is lapped to shed water downward, and spraying upward at pressure forces water behind the panels into the wall cavity. Houses are cleaned with low pressure and a cleaning solution instead.
What PSI do I need for a driveway?
Most rental units in the 2,500–3,200 PSI range are more than enough for concrete. The attachment matters more than the number: a rotary surface cleaner gives an even, stripe-free finish, while an open wand waved by hand leaves visible arcs.
Why did my driveway end up with stripes?
That's the signature of cleaning with an open wand instead of a surface cleaner. Pressure applied by hand is uneven, so you get clean arcs against dirtier concrete. The fix is to redo the whole slab with a surface cleaner so the pressure lands evenly.
Do I need to use soap, or is water enough?
For anything green or black, you need a cleaning solution. That growth is alive and rooted in the pores, so plain water knocks the top off and it returns within weeks. Pre-treating kills it, which is the difference between a clean that lasts a season and one that lasts years.