I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not
removed all of the black mildew-style staining or much of the blobs of
green lichen(?).

How can I get it cleaner than this? Does it need a detergent (the
Karcher has a detergent container but that doesn't work with the high
pressure lance attached), or do I need a more powerful pressure washer
(recommendations?), or something else?

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.

--
F

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not
removed all of the black mildew-style staining or much of the blobs of
green lichen(?).

How can I get it cleaner than this? Does it need a detergent (the
Karcher has a detergent container but that doesn't work with the high
pressure lance attached), or do I need a more powerful pressure washer
(recommendations?), or something else?

Soduium Hypochlorite?
https://www.youtube.com/watch?v=KDLbtMzcWTM

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not
removed all of the black mildew-style staining or much of the blobs of
green lichen(?).

How can I get it cleaner than this? Does it need a detergent (the
Karcher has a detergent container but that doesn't work with the high
pressure lance attached), or do I need a more powerful pressure washer
(recommendations?), or something else?

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


The rotating nozzle works fantastically well for me. It really
does.Yours must be faulty.

Try bleach for the staining.

Bill

In article ,
F news@nowhere writes:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

I would imagine that would cut the block in half...

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

On 08/06/2018 16:32, Andrew Gabriel wrote:
In article ,
F news@nowhere writes:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

I would imagine that would cut the block in half...

It did sound high but it was the conversion from 'Working pressure 9
MPa' in the instructions...

--
F

F wrote:
Andrew Gabriel wrote:

F writes:

I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

I would imagine that would cut the block in half...

It did sound high but it was the conversion from 'Working pressure 9
MPa' in the instructions...

I don't think it's wrong. My Nilfisk is 130 bar, which is over 1800 psi

In article ,
Andy Burns writes:
F wrote:
Andrew Gabriel wrote:

F writes:

I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

I would imagine that would cut the block in half...

It did sound high but it was the conversion from 'Working pressure 9
MPa' in the instructions...

I don't think it's wrong. My Nilfisk is 130 bar, which is over 1800 psi

Oh, I was thinking 1300 bar, sorry!

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

Andrew Gabriel wrote:

Andy Burns writes:

I don't think it's wrong. My Nilfisk is 130 bar, which is over 1800 psi

Oh, I was thinking 1300 bar, sorry!

Ben at Applied Science has upgraded his water jet cutter to a 255bar
petrol pressure washer ... but it is using abrasive

https://youtu.be/qAIDFaKhcZE

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not
removed all of the black mildew-style staining or much of the blobs of
green lichen(?).

How can I get it cleaner than this? Does it need a detergent (the
Karcher has a detergent container but that doesn't work with the high
pressure lance attached), or do I need a more powerful pressure washer
(recommendations?), or something else?

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


We use an Aldi pressure washer (which looks to be a Karcher clone, I
suspect the 125) on both block paving and patios. The lance shifts
anything but is slow. We've one of the rotating brush things (about 40
cm in dia) which shifts most stuff.

I don't know what pressure it is, it wasn't that expensive (£80 or so),
so I suspect it isn't one of the more powerful ones. I use a mix of
washing liquid and dissolved washing powder, simply as I'd run out of
the proper stuff, it seems to work as well.

We try to do it yearly but missed last a year, so last year it was
really bad. The washer still coped. Reminds me, it is due again. ;-(

On 08/06/2018 16:25, Bill Wright wrote:

The rotating nozzle works fantastically well for me. It really
does.Yours must be faulty.

To clarify, I'm talking about the thing where the jets swivels round
very quickly, like as if you were drunk and got onto a fairground
roundabout and then had a ****.

Bill

On Friday, 8 June 2018 15:59:40 UTC+1, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not
removed all of the black mildew-style staining or much of the blobs of
green lichen(?).

How can I get it cleaner than this? Does it need a detergent (the
Karcher has a detergent container but that doesn't work with the high
pressure lance attached), or do I need a more powerful pressure washer
(recommendations?), or something else?

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.

--
F

I have exactly the same problem.
Tried all sorts of stuff,(including bleach)
Nothing seems to shift the black stuff.
It seems to have got right into the concrete.

I have concluded that using light coloured blocks is a bad idea.

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not


It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.

Mike

On 08/06/2018 22:34, Bill Wright wrote:
On 08/06/2018 16:25, Bill Wright wrote:

The rotating nozzle works fantastically well for me. It really
does.Yours must be faulty.

To clarify, I'm talking about the thing where the jets swivels round
very quickly, like as if you were drunk and got onto a fairground
roundabout and then had a ****.

There are two rotting nozzle things I have used...

One is the Karcher style "pencil" jet - a very narrow focussed beam of
water from a nozzle that allows the end to rotate, and projects the
water at a slight angle. Hence the nozzle rotates at high speed in
reaction to the water flow. The result in an aggressive cleaning jet
with a percussive effect - focussed on a few square cm of surface. It
creates a distinctive buzz at around 50Hz when used. The cleaning is
more effective than the "water broom" style lance, but its more prone to
causing surface damage on loose mortar etc.

The other rotating gizmo, is the T-Racer style patio cleaner. This looks
a bit like a small flymo on a stick, and forms an enclosure over a pair
of nozzles mounted on a rotating arm probably around 12" long. The jets
being angled more obliquely. This also provides a percussive but less
aggressive cleaning action,. It has the advantages of controlling the
spray an confining it to the enclosure so you don't spray the dirt over
everything near it, and it also sets the water angle such that it is
less likely to remove grout and other jointing materials from blocked or
slabbed surfaces.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Muddymike wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.

Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.

If it shows any reluctance to spin, without water, if you simply
flick the rotating arm, it may be that grit has got into the
moving parts, and it needs cleaning out.

Chris
--
Chris J Dixon Nottingham UK


Plant amazing Acers.

On 11/06/2018 12:44, Chris J Dixon wrote:
Muddymike wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.

Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.

If it shows any reluctance to spin, without water, if you simply
flick the rotating arm, it may be that grit has got into the
moving parts, and it needs cleaning out.

It's never worked from the first time I connected it. But I discovered
that too late for the guarantee!

However, the problem is solved: I've replaced the K2 with a K4 and the
dirt flies off the blocks. Topcashback
(https://www.topcashback.co.uk/ref/digital - referral link) were
offering 5% cashback on Ebay purchases plus a 10% code which meant that
Argos's already keen price was more than inviting.

--
F

On 11/06/2018 16:26, F wrote:
On 11/06/2018 12:44, Chris J Dixon wrote:
Muddymike wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.

Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.

If it shows any reluctance to spin, without water, if you simply
flick the rotating arm, it may be that grit has got into the
moving parts, and it needs cleaning out.

It's never worked from the first time I connected it. But I discovered
that too late for the guarantee!

However, the problem is solved: I've replaced the K2 with a K4 and the
dirt flies off the blocks. Topcashback
(https://www.topcashback.co.uk/ref/digital - referral link) were
offering 5% cashback on Ebay purchases plus a 10% code which meant that
Argos's already keen price was more than inviting.


Now the blocks are clean, is it worth sealing them?

Does it work?

Does it last?

--
F

On Mon, 11 Jun 2018 09:28:30 +0100, Muddymike
wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.


I just use the basic jet with no attachment (non-Karcher cheapo make).
then I can see it's cleaning it - works just fine (apart from making me a
bit mucky).

On 11/06/18 09:28, Muddymike wrote:
On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not


It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.

Mike

I use a mixture of bleach , water and caustic soda.
It not only cleans he block paving, but also gets rid of any growth
coming up between the blocks.

"Jimmy Wilkinson Knife" wrote in message
news
On Mon, 11 Jun 2018 09:28:30 +0100, Muddymike
wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.


I just use the basic jet with no attachment (non-Karcher cheapo make).
then I can see it's cleaning it - works just fine (apart from making me a
bit mucky).

Easily fixed, do yourself with it once you are finished.

On Mon, 11 Jun 2018 20:47:54 +0100, Rod Speed
wrote:



"Jimmy Wilkinson Knife" wrote in message
news
On Mon, 11 Jun 2018 09:28:30 +0100, Muddymike
wrote:

On 08/06/2018 15:59, F wrote:
I've used my Karcher K2.59 pressure washer (1300 psi) with the high
pressure lance on some red/brown and beige block paving but it's not

It did come with a circular rotating nozzle assembly but that is
reluctant to spin and is basically a waste of space.


Clean the jets. I use one and they need cleaning with the supplied
pricker now and then otherwise it stops rotating.


I just use the basic jet with no attachment (non-Karcher cheapo make).
then I can see it's cleaning it - works just fine (apart from making me
a bit mucky).

Easily fixed, do yourself with it once you are finished.

There's a video on youtube of some (Aussies funnily enough) doing exactly
that for a laugh. Accompanied by many comments underneath saying how
reckless they are. Some people just don't get "fun".

On Tue, 12 Jun 2018 05:47:54 +1000, cantankerous geezer Rot Speed blabbered,
again:


I just use the basic jet with no attachment (non-Karcher cheapo make).
then I can see it's cleaning it - works just fine (apart from making me a
bit mucky).

Easily fixed, do yourself with it once you are finished.

Of course, so you can suck him off with more gusto again, senile cocksucker!