If you wish to remove moss and algae on surfaces such as walls before applying a new coat of paint, then you can apply Baticlean CR which is a pH neutral cleaning solution that does not require rinsing. Before the application of Baticlean CR we recommend brushing as much growth as possible. To help with this we have a range of specialist brushes which include telescopic handles, wire brooms and a number of different heads.
Dilute Baticlean CR in water as per the usage instructions, spray on the surface and leave to clean without rinsing. It will take a few days and then you can, optionally, clean down the surface with a brush and/or rinse. You can then apply another treatment of Baticlean CR if you wish to leave protection under the paint.