Quote Originally Posted by iris lilies View Post
Does Wet and Forget keep green mold stuff off?
It takes it off but doesn't prevent it from eventually coming back. I have to spray individual splotches every so often to keep it looking nice, easy peasy over all!

When we renovated our brick city townhouse in 1990 we added a two room addition and at the back of the house we were allowed by the historic code to use non-brick material. At that time vinyl was a standard, so that’s what we used. it never got the green moldy coating.

It typically only shows up on areas without sufficient sunlight, that's why it's usually found on the northern side of a house or an area with a lot of shade. As I recall, you don't allow shade generators such as trees in your gardens.