What are those black roof stains on my roof?
Roof stains are caused by a hardy type of blue-green algae called Gloeocapsa Magma. All it takes is for one algae spore to land on your shingles and take hold and then it’s off to the races. The algae will continue to multiply and spread, its growth fed by the limestone filler in the shingles and moisture.
Is this a signal that it's time for a new roof?
Simply the presence of algae stains does not necessarily equate with needing a new roof. In many cases all a roof needs is a professional cleaning to restore its original look and health.
Will removing the algae improve my home's curb appeal?
Most people are shocked when they see how much better their home looks after a roof cleaning. Houses can sit on the market with virtually no activity due to the misconception that a home is in need of a new roof. Spending money on your landscaping, paint and window cleaning will not improve your curb appeal if your roof is covered with streaks of black algae stains.
Isn't roof algae a cosmetic issue so it can be ignored for now?
If not cleaned off and kept at bay roof algae has the ability to shave years off the life of your shingles. It’s important to remember that roof algae is a living organism that needs food to continue to grow. Shingle makers now use limestone filler in the manufacturing process which the algae feeds on. This will result in premature loss of shingle granules and general deterioration. Shingle granules are vital to the health of your roof and home because they work to deflect UV rays and heat away from your roof surface. If they are gone or covered with algae then you will have a hotter attic and higher AC bills.
Can I remove the roof algae with high pressure?
Power washing your roof to remove algae stains is the worst thing you could possibly do to it. Shingle manufactures do not recommend the use of high pressure washing. The shingle granules will be blasted off along with only some of the stains. Hitting your roof with 2000 PSI will damage your shingles and actually reduce the life of your roof.
Is it only necessary to clean the sections of the roof that have visible stains?
Just because you can’t see algae stains on certain parts of the roof doesn’t mean that it’s not already there and beginning to develop. Keep in mind that in its early stages, roof algae is completely invisible to the naked eye. It’s not until the more advanced stages that it actually turns black and becomes visible. If you can see algae on even one section of your roof, that means it’s probably already taking hold on your entire roof.
Is roof cleaning a DIY project that any homeowner can do in an afternoon?
There’s nothing easy or quick about roof cleaning. Either you can hire somebody who has the equipment, proper chemicals and experience to clean your roof in a few hours or you can spend an entire weekend doing it yourself and possibly risking your safety. If you want to have any chance of cleaning your roof safely and effectively, then you need to set out a clear plan of attack, have safety procedures in place, and, above all, take your time. Rushing through a roof cleaning only leads to trouble.
Now you have the information you need to take the first step in restoring the look and health of your roof. Why pay $4,000 to $8,000 for a new roof when all it needs is a professional cleaning at a fraction of the cost?
If a roofing company tells you that you need a new roof just because of some algae staining, call us and we'll give you our recommendation. They may not tell you that it just needs to be cleaned.
We will NOT clean a roof that is in need of repair or replacement just to make a sale. We will advise you to consult a professional roofing company.
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830-660-9849
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830-660-9849
Fully Insured Up to Three Stories
San Antonio, TXWe Serve The Following Cities Alamo Heights, Boerne, Bulverde, Canyon Lake, Castle Hills, Cibolo, Comfort, Converse, Fair Oaks Ranch, Garden Ridge, Grey Forest, Helotes, Hill Country Village, Kerrville, Live Oak, New Braunfels, Olmos Park, San Antonio, Schertz, Selma, Shavano Park, Spring Branch, Terrell Hills, Universal City, Windcrest,San Marcos,La Vernia,Gonzales.
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