I will soon be painting the exterior of my house which is rough render, so should i wash the walls down with a pressure washer at a moderate power before i start painting.
is there anything that i could put in the water bottle of the pressure washer that could be applied to the walls to make removing green algae easier and quicker?
is there anything that i could put in the water bottle of the pressure washer that could be applied to the walls to make removing green algae easier and quicker?