Slab cleaning tips please

JuzaMum

I've been busy jet washing and tidying to give my house some 'kerb appeal'. Most of the slabs have cleaned up nicely but a few have been left spotty (hopefully picture attached). I tried using the high pressure nozzle for stubborn marks and flaked a piece of a slab so didn't continue. How can I get rid of the spots. I am reluctant to use biocides due to the proximity of plants and environmental impact.

Brie

would a scrub with a stiff broom help? 

it might not look that bad if one's not thinking about it - I mean you know it's there but would someone looking at the whole thing really notice?

JuzaMum

Brie said:

would a scrub with a stiff broom help? 

it might not look that bad if one's not thinking about it - I mean you know it's there but would someone looking at the whole thing really notice?

I think you are right, someone came round who hadn't visited for a while and said how nice everything looked. 

TheGreenFrog

looks like blackspot, which will be ingrained into the stone.  There is a product which purports to remove blackspot, but it is expensive (Google patio black spot).  I tried it once but decided it was not worth the effort or the expense.  

Albermarle

Also there are companies who claim they can clean your patio back to like new, including getting rid of blackspot.
All at a cost of course.

sk2402005

Try some patio magic, that might clear it

twopenny

To be honest it's going to look clean and tidy to viewers.

If they are that picky about some spots on the slabs they will know they can easily clean it.

They are going to be more interested in size and number of rooms, maintenance of the important bits and location.

I think you've got to the stage of looking so intently at things they are more important than they really are

JuzaMum

twopenny said:

To be honest it's going to look clean and tidy to viewers.

If they are that picky about some spots on the slabs they will know they can easily clean it.

They are going to be more interested in size and number of rooms, maintenance of the important bits and location.

I think you've got to the stage of looking so intently at things they are more important than they really are

I think you are probably right. I shall stop worrying about it

casper_gutman

I think that's the best approach. Personally I think concrete slabs look better when they've weathered a bit, with moss along the joints and a few spots of mould/lichen. I've never disliked our patio more than when it was newly laid!