3 Important Things To Know About Discolored Roofs

Posted on: 19 December 2017


Are you a first-time homeowner? Does the color of your roof have you wondering if you need to start setting aside money to replace the whole thing? Discolored shingles can certainly be a sign that your roof needs to be replaced. However, this does depend on what's creating the discoloration. In many parts of the country, your roof may become discolored by a specific type of algae that likes to grow on the shingles. Some things that you should know about this situation include: 

Mostly harmless: The species of algae in question is called Gloeocapsa Magma and is typically little more than an ugly nuisance. Although unsightly, it doesn't really cause harm to the roofing material. However, the darker surface of the algae may cause your roof to heat up more quickly in the summertime, resulting in a slightly hotter temperature inside your attic or crawlspace. But a good roof cleaning is generally all that's needed in order to restore the shingles to their normal color and to restore the temperatures to what they ought to be. Once the cleaning has been performed, you'll also be able to see that the shingles are in a similar condition to those without algae growing on them.

Professional removal: Although Gloeocapsa Magma is more or less harmless and is easily removed by a roof cleaning, you should leave the cleaning efforts to a professional. Using the wrong chemicals or wrong chemical strength to clean your roof can be more damaging than the algae in question ever was. Slipping on the wet roof tiles and falling is also a serious possibility. In order to prevent injury to yourself and to your roofing materials, always have a professional perform any cleaning or maintenance on your roof rather than attempting the feat on your own.

Prevention is possible: Once you have Gloeocapsa Magma growing on your roof, a professional roof cleaning is the best way to remove the stained-looking area and get your roof looking like new again. But once the algae growth has been removed from your roof, it's possible to prevent the algae from returning and re-staining your roof. The roof cleaning company should have a chemical spray that prevents the algae from regrowing. Although inexpensive, this chemical spray will need to be reapplied regularly to prevent regrowth. A more costly, but longer lasting, solution involves nailing strips of copper or zinc along your roof ridges. During rainstorms, the water will wash microscopic particles of copper or zinc across your roof, helping to kill off any algae before you notice it growing.

Contact a roofing company, like The Roof Doctor , for more help.