[Paul flanagan]

Hi All

Can anyone recommend what chemicals I would use to remove the black staining on this patio.

Any help would be greatly appreciated

Thanks
Paul

[TomCrowther]

There have been a few posts like this recently. Maybe more on the facebook page. Hard to be sure from the pic but it looks like it might be coming from the cement mix when they were layed.

[Kev Martin]

Hi All

Can anyone recommend what chemicals I would use to remove the black staining on this patio.

Any help would be greatly appreciated

Thanks
Paul

Do a quick test on it by wiping it with a damp cloth.  If this gets rid of it / camouflages it which I think it probably will.  I would deep clean it  using a Mono Rotary machine fitted with a soft to medium brush coupled with SRP X -Treme Heavy Duty Tile & Grout Cleaner.  Then give it a pH Neutral rinse.  Allow it to thoroughly dry and then seal it with SRP Enrich and Seal.  Job Done