Hi fellas, Ive recently had my house and out building rendered, the house looks perfect but the outbuilding wall has streaks down it already, there isnt any overhang on the felt. Can you guys recommend anything to get rid of of the streaks and prevent them coming back? In going to get some more felt for the roof so that it overhangs. Can i power wash then off on a gentle setting, the render was only done 4 days ago.