Clean Exterior Report post Posted January 5, 2017 I'm going to give this local bank a price to clean their roof but I wanted to get your thoughts on what type of roof it might be and how to clean it. It looks like slate from the ground but I'm assuming its a composite of some sort. Is this cleaned like asphalt shingles or would a lower mix be the way to go? Share this post Link to post Share on other sites
Advantage Roof Cleaning Report post Posted January 6, 2017 Jeremy,From the photos it appears as Vermont slate which cleans up great. Use a little extra surfactant since the surface is relatively smooth and the solution runs down quickly. http://advantageroofcleaning.com/how-to-select-a-qualified-roof-cleaner/ Share this post Link to post Share on other sites
ReNew Roof & Exterior cleaning Report post Posted January 10, 2017 Yes, Slate cleans up really nice. I used about 30 gallons of mix @40% on this side of the roof (north side) and used no surfactant. I probably could have used less mix if I added surfactant but the slate here is over 130 years old. IMG_2856.CR2 IMG_2895.CR2 IMG_2903.CR2 And Chris, the patina'd copper ridge cap wasn't affected, still green. Client is Super Super happy, Said it was a miracle. 1 Philip McCullough reacted to this Share this post Link to post Share on other sites
Shingle Brite Report post Posted January 10, 2017 Do you own your own lift? Share this post Link to post Share on other sites
Advantage Roof Cleaning Report post Posted January 10, 2017 I see you used a lift. I was temped to rent a lift for a job last year just to try it. My concern with a lift is that most of time, I would not be able to move it to the back of the house. What is your experience?http://advantageroofcleaning.com/what-are-those-black-streaks-on-my-roof-roof-cleaning-willowbrook-illinois-in-dupage-county/ Share this post Link to post Share on other sites
Sussex County Roof Cleaning Report post Posted January 10, 2017 Now I thought the whole cleaning of slate thIng was resolved years ago regarding surfactants? No surfactant cause it messes with the oils in the slate. Share this post Link to post Share on other sites
ReNew Roof & Exterior cleaning Report post Posted January 10, 2017 The lift was a rental. I wished I owned one. I was thinking of a bucket truck at some point. Share this post Link to post Share on other sites
ReNew Roof & Exterior cleaning Report post Posted January 10, 2017 I had to use a lift on this roof. Being 130+ years old and the interior was refurbished about 10 years ago, I didnt want to risk spraying and rinsing up the roof, never want to do that anyways. Plus it made it so much easier and faster. Cleaned whole roof including steeple, garage and north side of the rectory in less than 3 days. The hardest part was putting down 2x10s for the lift wheels so we didnt ruin the grass. The lift oes pretty good around tight corners but there does nee to be some space for the lift to swing around the corner. Share this post Link to post Share on other sites
ReNew Roof & Exterior cleaning Report post Posted January 11, 2017 Now I thought the whole cleaning of slate thIng was resolved years ago regarding surfactants? No surfactant cause it messes with the oils in the slate. Thats the wisdom I stick with, No surfactant. Share this post Link to post Share on other sites