Hi everyone....I really am wanting to clean my roof (small job by all your standards)1800 sqft house, single story rancher. I have a pressure washer and have read several threads but am afraid that I read the black stuff coming off the roof isn't the grime but tar holding the shingles together! Can anyone clarify for me the potion I should use. I have read alot of apple sauce /bleach solutions and also read simple cherry?....which would seem a bit safer. Anyways appreciate any assistance you may offer.
With much gratitude...
michele