Topic: Leaf Stains on Concrete

[ABM Cleaning]

I have run into this a couple of time and had a driveway that had it today...concrete was not really dirty...lots of red mud but cleaned up good with surface cleaner and cold water...but near the edge there were imprints of leaves that would not come up...applied F18 which when sprayed on with pump up lightened them up but would not get totally get rid of the imprint...the concrete was a couple of years old...wasn't sure if it was a particular type of leaf or what..anyone else seen this

[ALL SURFACE]

Hit it with some fresh SH and say goodbye to it! 

[ABM Cleaning]

Did that ...just picked up some 15% 2 days ago but still wouldn't totally get rid of it ..maybe just some weird Carolina thing

[Guy B]

Ox should take it right out.

[spyderski]

yeah thats wierd, i used roof mix and knocked it out over here

[ABM Cleaning]

Thanks guys...will head back there tomorrow and hit it with pretty much straight SH...I had a hw mixed up that was pretty strong but maybe not strong enough...if not will do the ox

[NateF]

I had the same exact problem this year. Big area of leaf stains right at the entry door to a buddies house. Applied f18 stong and it lightened them a lot but not completely gone. Over the past couple months they faded with time and now they are completely gone. The weird thing was that about a month ago or so the stains would come back when the driveway got rained on and then disappear as soon as it dried. Now they are completely gone even when the driveway is wet.

[Guy B]

I think its called Tannin Stains, or something like that.