Thank You SO MUCH for the great review! Incidentally, the roof was not pressure washed [most homeowners call it all pressure cleaning] The roofing manufacturers all say "DO NOT PRESSURE WASH ROOFING" I do have a website and quite a strong internet presence. My website, with the manufacturer quotes and links *If you do a Google Search for "Roof Cleaning or Pressure Washing Charlotte County, or Port Charlotte, Venice, Englewood, Rotonda, North Port, Punta Gorda, Sarasota" etc you will find me online on the 1st page of Google. Again, thank you so very much for taking the time to give me such a fine, positive review! Chuck Bergman Here is a quote from some roofing manufacturers and their roofing association about NOT PRESSURE WASHING ROOFS.***************** FIRST OFF, TO MAKE IT SIMPLE. THESE ARE THE RECOMMENDATIONS FROM THE ROOFING MANUFACTURERS WHO SUPPLY YOUR WARRANTY AND MAKE YOUR ROOFING: From GAF Roofing Manufacturers about black algae removal: "If a new roof is not an option, GAF recommends cleaning the roof with a special mixture. That mixture is:" 'bleach and TSP' "What NOT To Do! Do not power wash the shingles to clean the shingles. Some roof cleaning companies offer this service. However, it is not recommended." From ARMA roofing manufacturers Association-how to clean roofing. "Algae discolorations to remove from roofing surfaces, applying a solution of chlorine bleach, trisodium phosphate, and water. Solutions for these ingredients depend on the amount of discoloration. Solutions range to one cup TSP and 2.5 gallons each of bleach and water. Caution! High pressure washing systems for algae removal should not be used." From Owens Corning Roofing Manufacturers : "USE CHLORINE and TSP" "DO NOT USE A PRESSURE WASHER" This one from the ARMA says not to allow anyone to apply any *after coating* such as Algaecides, Fungicides, Copper, Zinc, or other Roof treatments - not anything! Now my ad: I AM 100% ALL FOR GOING GREEN! As Soon as a roofing manufacturer lists a green product as safe on their websites, I will put it on your roof. Right now none do, It's your property and your roofing warranty, I have no right to use you as a "test" project. The only 100% Green method known to me, is power washing the roof with no chemicals, just water. A roof will sometimes come clean "looking" just by blasting the algae off. The algae was not chemically killed, so after pressure washing, the roof is still coated in living algae spores, which continue to grow strong and turn black again in under a year. Of course, that pressure also takes years off the life of your roof and may well void your roof's warranty, but it is 100% environmentally friendly, at first glance. First glance? Yes, nothing will ruin a roof faster than pressure washing it, so if you you look at the long term picture, you are adding to the asphalt / tar, in the landfills, as roofs need replacing at half life. That's not eco-friendly at all, just expensive for you! Other than chlorine, as suggested my the manufacturers of the roofing, who knows what chemicals are used to make a new so called "green" roof cleaning mix? We do know chlorine though! We drink it in our faucet water, soak in it in our showers and swim in it in our pools. It is bio-degradable and after applying it to a roof, it reverts back to what it was made from-common salt. The photos below show some roofs we have cleaned with the only roofing manufacturer approved chemical, chlorine / water and a small amount of TSP. Please call us for safe, No Pressure, Soft - Washing of your roof, or a free Pressure Cleaning Quote on your house, pool enclosure, decking, driveway, fence or commercial buildings and parking areas. Englewood, Florida: 941- 474-8883 Cape Haze, Placida, Rotonda, Grove City: 941-698-1959 Port Charlotte, Punta Gorda, PGI: 941-255-8600 Venice, Nokomis, Osprey, Southern Sarasota: 941-483-3673