black algae stains

Hi, I wanted to introduce myself. My name is Doug Keifer and I am the owner of Toledo Roof Cleaning LLC. I am new to this forum and look forward to sharing information with all other members. We specialize in NON-PRESSURE roof cleaning in the Toledo area.

My company, The Roof Cleaners LLC, is located in Chester County Pennsylvania. We offer non pressure roof cleaning in Pennsylvania, Delaware & Maryland. We also offer house washing, concrete cleaning and wood restoration. I am new to this forum so I thought I would post a few pictures of our...