Cleaning porcelain paving

[morqthana]

I need to clean my porcelain paving - these photos show what it's like.





Yeah - I know - I needed to clean it last year. In my defence this is the worst area - most of it isn't as bad as this.

I've used a stiff brush, and warm water with fairy liquid, and got these results:



As you can see, there's still some staining.

Are there any proprietary cleaners likely to be better, or are they just washing up liquid without the foaming agent?

I scrubbed reasonably hard - I could use more elbow grease if I had to, but would rather not as I've got about 35m² to do and I'm a lazy git.

Also, I've got a Karcher pressure washer - are their surface cleaning accessories any good?

 

[jj4091]

Haven't you tried just using the normal lance on your Karcher?

 

[morqthana]

Well, no.

1) I was concerned about the grouting.

And

2) I'm not entirely sure where Oh, Look! A squirrel!! the Karcher is.

 

[morqthana]

1) I was right to be concerned - the grouting is coming away in chunks after just the use of a stiff brush. *%$##!£@ useless !$%^+{@@?#~ builders..

2) Probably sounded mad - I meant to say I don't know where the lance is. The washer unit I have, but I've misplaced the box with all the accessories, hoses etc when I jampacked a shed with loads of stuff from the house during an attack of the builders. I'll turn up. I've got a vague memory that I might have one of the paving washer thingies in there. The vagueness is not because I'm a dozy old twit (I might be, but that's not the reason here). Some years ago I bought a graded return from the Karcher outlet, and it was a package including various accessories which might have included a paving cleaner, but I've never had the need for one until know.

Just think of the excitement when I find the box! What will be inside? Be still, my beating heart...


Anyway, I tried a bit of household bleach on one tile - seemed to do the trick, but I'm a bit worried about the run-off if I do the whole patio.