From the first day stonework is laid, the next time it rains, millions of lichen microspores are deposited. These originate from the trees, initially as tiny spores, similar in size to pollen. Propelled by the wind, they travel for miles, until it rains, when they are watered into the pores of the stone.

For the first twelve months they lay dormant, until they begin to establish themselves by feeding off the minerals in the stone, finally germinating after two years, and appearing on the surface as "patio black spots'.

At this point they are almost impossible to remove, as they react to the minerals, growing both across the stone and putting down fibrous roots. Jet washing has little or no impression, and by focusing the pressure washing continually on one spot, damage can be caused by the vibration of the jet delaminating or eroding the surface.

Most proprietary patio cleaners will remove green algae but can take weeks to work and have no obvious effect on the black lichen.

The Patio Black Spot Remover and Preventer system doesn't just remove those hideous black spots but completely cleans and restores the original colour to all garden stonework, plus prevents their return! The system works on any type or age of stone, ultimately restoring it to the same condition when first laid.

www.patioblackspotremoval.com

Exhibiting at Glee Stand 6L80-M81

https://www.youtube.com/watch?v=6Ao097--mXY