Hi,
Not sure where to post this, but a funny thing happened today.......
I was cleaning the yard of algae which has developed on the slabs and also on part of my Jimmy and canvas' from sitting under a tree. I was using something called "Algon" (no, I'm not on commission) to clean the concrete. It's organic, I had some left over and sprayed a bit on a small part of the canvas and paint work.
A week later, the algae has gone, no scrubbing, and the canvas has not faded as there isn't any chemicals in it. The paint work has come up clean also.
It bought the slabs up a treat, too..........
Ash.