I've heard some folks reccomend 10% bleach solution in water. Applied with a
spryer. I've heard others reccomend various concentrations of vinegar.

All have suggested you not use both chemicals on the same day.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


wrote in message
...
I have a lot of black gunk (mold, fungus, whatever) growing on my asphalt
shingle roof. What is the best way to get rid of it.

Thanks.