How do you keep algae from growing on your house?
I have one side of my house that does not get sun. When we bought the house two years ago we had it washed and repainted. I thought that took care of the issue. I noticed that algae is starting to come back. I put landscaping paper down and mulch over the top in that area. Did that help keep it at bay or make it better for the growth? Short of cutting down the trees how can I keep this unsightly stuff from growing?