You have probably heard all the new fad "GO GREEN" "Biofoam" "Bio Degradable" "Eco-Friendly" roof cleaning pitches that have cropped up recently. They try to convince unknowing homeowners that chlorine bleach should not be used on roofing to clean with.
Now, here are the facts from The Roofing Manufacturers Themselves. It's your warranty, you can listen to the green salesman and pressure washing guys, who can blast the discolorations [ along with your roofs granules etc ] from your roof, or to those who make the roofing and honor warranties or void them.
Here you go! I could easily supply more proof, but this is pretty obvious, I'd say.
[h=1]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:
"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!
Florida-Roof Cleaning by Chuck Bergman 33981 34224 34223 33947 34293 33950 34231 33946 33913 33920 33955 34292,, 34287
941-698-1959
You have probably heard all the new fad "GO GREEN" "Biofoam" "Bio Degradable" "Eco-Friendly" roof cleaning pitches that have cropped up recently. They try to convince unknowing homeowners that chlorine bleach should not be used on roofing to clean with.
Now, here are the facts from The Roofing Manufacturers Themselves. It's your warranty, you can listen to the green salesman and pressure washing guys, who can blast the discolorations [ along with your roofs granules etc ] from your roof, or to those who make the roofing and honor warranties or void them.
Here you go! I could easily supply more proof, but this is pretty obvious, I'd say.
[h=1]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:
http://www.gaf.com/Documents/Algae_Staining_on_Shingled_Roof_Surfaces_-_Steep_Slope_Techn-43-808-v3.pdf
"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.
http://www.asphaltroofing.org/pdf/tb_217.pdf
"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"
Owens Corning - Owens Corning™ Roofing Products Product Demo
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!
http://www.asphaltroofing.org/pdf/tb_227.pdf[/h]
Florida-Roof Cleaning by Chuck Bergman 33981 34224 34223 33947 34293 33950 34231 33946 33913 33920 33955 34292 34287
Charlotte & Sarasota County Florida Pressure Washing & Roof Cleaning by Chuck Bergman Since 1989
941-698-1959
941-474-8883
941-483-3673
941-255-8600
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