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How long will the algae related stains stay off of my roof once removed using the Roof Shampoo™ system?

April 26, 2017algae removed roof stains stay system

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How long will the algae related stains stay off of my roof once removed using the Roof Shampoo™ system?

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When Roof Shampoo™ technicians finish cleaning your roof, it will be as clean as a new roof. Since it’s impossible to tell how long it will take for a new roof to get algae stains, the same holds true for a roof cleaned using the Roof Shampoo™ system. However, many Roof Shampoo dealers™ give their customers a written warranty against any roof staining for a period of one year. Most roofing shingle manufacturers won’t give you any warranty against algae on a new roof installation.