This roof was cleaned on Friday, October 29. This was a garden variety cleaning with slight roof moss. The primary concern was gleocapsa magma which is appears as black stains on roof. We used the non-pressure method. We do not power wash roofs. Feel free to browse this blog for other roof cleaning projects in NJ. www.exteriorcleaningnj.com , www.thompsonroofcleaning.com, www.thompsonpowerwashing.com.