Roof Cleaning by A&E completed this slate roof cleaning in Lancaster, PA on May 8, 2012. We used our safe and effective non pressure cleaning method to clean this slate roof and remove the black algae that was covering the roof.
Very nice slate rood cleanning up there in Lancaster! Slate is more labor intensive then asphalt and it looks like you guys knocked it out of the park with this one!
Serving the Pocono and Lehigh Valley(Carbon, Lehigh, Northampton, Monroe, Pike and Wayne Counties), PA community as well as both Warren and Sussex Counties of New Jersey
Ray says that it is more labor intensive than asphalt singles. Could someone explain why for someone who has never done one and also what formula are you using for your cleaning mixture?