Hay Guys. Been reading up loads on this subject and every one seems to have there own mix. Iam not talking about mixs for roof washing but the actual house wash down mix. At the moment iam using 1200ml of industrial strength sh with 1200ml detergent in a 10 liter or bucket toped up with water. seem to be getting pritty good results. would like to know what your mixs are to get a comparison.