![]() ![]() Looks to me like the battle between to bleach or not to bleach has been going on for a long time, and looks to continue. But there was no moss or algae on it, Hey how bout that!? I have read from several different roofcare ‘experts’ that the high sodium content in bleach sucks the moisture out of the tar/petroleum body of the shingle, which makes sense in my mind, but that’s just me. Several shingles were missing having broke off in the wind by being bent backwards. But I’ve been on a roof that the homeowner told me he had been spraying bleach on for years, and it was like trying to walk on marbles, the grit was so loose. Well I haven’t put bleach on a roof and sat there and watched it turn shingles dry and brittle Garrett, so I haven’t “seen” it. Roofing products are specifically designed to inhibit algae growth for extended periods of time.” Types of algae resistant roofing products have been developed, and are now commercially available. The effectiveness of such cleaning techniques are only temporary, and discoloration will likely recur. Rinse process will make the roof surface slippery and potentially hazardous to walk on during treatment. Be warned that this solution application and Rinse the solution from the roof by gently spraying the surface with water. Observe all possible safety precautions when working on or near the roof. If possible, always work from a ladder and/or walkboards to avoidĭirect contact with the roof surface. Avoid scrubbing the surface,Īs this friction may loosen and remove granules. It carefully to avoid damage to other parts of the building and its surrounding landscape. Use normal precautions for handling bleach. “First, gently disperse this solution on the roofing surface. Solutions range from one cup TSP, one gallon bleach andįive gallons of water, to one cup TSP and 2.5 gallons each of bleach and water. Manufacturers and depend on the amount of discoloration. Solutions for these ingredients may vary between shingle Of chlorine bleach, trisodium phosphate, and water. "Algae discolorations are difficult to remove from roofing surfaces, but may be lightened by applying a solution But, in short, they recommend using bleach to clean shingle roofs: The following is directly from their bulletin regarding Algae Cleaning, which should apply to moss. ![]() I just went over ARMA’s (American Roofing Manufacturer Association) stance on roof cleaning. ![]() Hey Aaron, honestly asking here, have you seen bleach damage and dry out shingles? ![]()
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