Karcher K3.550 Pressure Washer Cleaning a Patio
Nov 7, 2026
Karcher K3.550: http://geni.us/viUQl
Using the Karcher K3.550 presssure washer with the 'dirt blaster' lance to clean an inner city patio. You can tell by the clean lines of the clean / dirty parts of the slabs that the muck is well set in and would take some shifting without a good pressure washer.
There are a few videos of this attachment on Youtube which show it cleaning an already clean slab or block which is a bit stupid so I made a video of it cleaning genuinely dirty patio slabs.
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This is a quick test of the Karcher 3550 pressure washer
and this lance, it uses a high pressure jet
which wiggles around really, really quickly. I'll show you it without
the pressure being on so you can see what sort of effect it has.
This attachment that I'm using in the video
is actually just called a dirt blaster. There you go,
there's no pressure on there, you can see it spinning round
and now I'll show you the difference when the pressure's on.
There you go, that's pretty awesome,
it just allows you to cut out a circle in all directions.
I'm going to do the rest of this patio
and I'll video it in various stages to see how
it's coming along.
That's half of the top patio done,
you can see where I've been, that's pretty awesome.
The top part of the patio finished, you can see
how it's come up, absolutely hellish compared
to the bottom one.
So when the bottom one gets done it'll be pretty much as new,
it's come up really well.