Genial on Weser break Sandstone!

After years of problems with lichen and algae on this beautiful reddish sandstone, I risked it time to try this product. I'm excited. Application was made after a thorough cleaning with a pressure washer. Lichens went to the Dirt Blaster (at 160bar) down very well, even the spots (the lichens) in the stone were gone after that.
After drying the plates I have this means consecutively applied twice wet in wet .... the Gloria-Drucksprühflaschen lend themselves well (after intensive cleaning of the syringe but never forget, if you did not want to dispose of the product anyway ...)

After more than a year, the Stones still look like directly after cleaning with a pressure washer ...

In local hardware store this remedy will cost about four times ...