The black you see on your roof is generally referred to as black algae. It's actually a bacteria, according to Wikipedia http://en.wikipedia.org/wiki/Gloeocapsa_magma
At Chuck Bergman Roof Cleaning and Pressure washing, we can completely erradicate that algae and in most cases make your roof look like it did when it was new!
Pressure Washing will remove the appearance [ along with the granules on shingles and the glazing on tiles ] but using a power washing machine does not erradicate the li
This is a video of Chuck Bergman Roof Cleaning and Pressure Washing from March 2013
I am editing right now, so here are some new videos of my son and I working!
Visit my website: Http://www.bergmanroofcleaning.com
I have had an A+ rating since 1990 with the BBB
We cleaned this large shingled roof [ 4200 sq ft under air + house garage and seperate garage ] on March 5th 2010. Of course, it was cleaned as the roofing manufacturers specify, as well as the Roof Cleaning Institute Of America! The homeowners were well pleased! We also pressure washed the house and garage walls.
Below are 9 feedbacks of my business on Merchants Circle [ actually 8, one guy accidently did it twice. He said he didn't think it went through on his first attempt? ] LOL
I have been licensed and insured in Charlotte and Sarasota County since 1989.
We have been a father and son business, since 1994.
You will not get any new guys in training with us!
Below is a 2 minute video where you can watch a large portion of this
blackened tile roof come clean before your eyes, with us using the
Roofing Manufacturers specified Cleaning Method. This Non-Pressure method is the only method suggested by the largest roof cleaning organization in the world, the RCIA