Bleach-Free, No Scrub Mold & Mildew, Moss & Algae Cleaner | Wet & Forget

Has anyone used this product for roof cleaning?

I have a Gerard Metal Roof. Panels are tile shaped, so there are peaks and valleys. None too excited about walking on it.

Saw a video of a person cleaning a metal roof with a spray on chemical. Not sure what he used, but I then came across this product a short while later.

Spray on and forget it.

Thanks for sharing any experience you may have with this product.