Quote:
Originally Posted by Cajun Cleanin
I don't think a house wash mix will clean the roof unless your apply 4 to 6% bleach to the walls with your mix.
I've washed alot of dormers and my mix won't cut the stuff on a roof.
With that being said you need to be careful and test your mix it may need to be adjusted.I think I put 1 to 2 % bleach to the wall in my mix depending on the soil and mildew level.
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Same here. I have done plenty of dormers and the house mix just won't cut it to remove the roof algae.