Brown roof tile

Hey guys I’ve searched the forums but can’t seem to find an answer to my question, can I soft wash a dark brown flat tile roof without rinsing?

I’ve never seen one but I probably wouldn’t. The brown will really show the soap after it dries. Runoff will be harder to avoid. Looks like no gutters so morning dew or a light rain would push off a lot of mix.

Sent from my iPhone using Pressure Washing Resource

Thanks For the reply Thad, my painter friend has washed this roof in the past with pressure, but I was hoping to soft wash, is it possible to rinse plants and grass well enough to avoid damage, for my mix I was thinking a 50-50 SH at 11% and roofsnot, the roof is not real dirty, it just has black streaks.