Colorado Springs Roofing: Article About Cleaning an Algae Covered Roof
Roofs with light colored shingles often become darker with time. However, in many cases, the change in color appears somewhat streaky or moldy. In fact, the culprit is often not mold at all but a kind of blue green algae. The scientific name of the species is Gloeocapsa magma. While the algae thrives in warm and damp places, it can develop in temperate and cooler climates during particularly warm summers.
The good news about this algae is that it does little actual damage to the roofing. Therefore, in most cases, it's unnecessary to call out the Colorado Springs roofing contractors. If the roof is due for replacement soon, it may be preferable to install darker shingles the next time around to make any algae growth less visible.
While the algae doesn't damage the roof, many homeowners find its appearance bothersome simply for aesthetic reasons. The best course of action to remove the algae is to give the roof a good cleaning. Before cleaning a roof, though, consider hiring a professional to access the roof. Particularly for pitched roofs or two story homes with hard to reach areas, climbing on top of one's own roof is rarely advisable.
If it's possible for a homeowner to safely reach the roof independently, a mixture of bleach and water can be applied to the entire roof area. Rigging a hose with a spray nozzle to distribute the mixture is a good idea, but avoid using a pressure washer, which can damage shingles.
A roofing contractor from Avalanche Roofing & Exteriors of Colorado Springs CO can answer any question about attic insulation or exterior painting.
Whenever using a bleach solution outdoors, it's vital to take steps to protect the surrounding wildlife. Begin by spraying all of the plantings around the perimeter of the house with water. If plants are already wet, they will be less likely to be damaged by the bleach. When the job is finished, it's best to wash them down again, liberally. Any pets should stay indoors until the job is completed.
Once the algae has been sprayed down, additional measures are advisable to stop algae growth from returning. Inserting strips of zinc or copper underneath the top row of shingles is a valuable preventative measure. (Since this task requires approaching the roof's ridge, it's usually best left to professionals.) As water runs down the roof, it passes by the zinc or copper strips. Trace amounts of zinc or copper mix with the rainwater, preventing algae or moss growth.
Algae growth is a relatively inconsequential roofing issue. Unlike mold growth, which is found underneath the roof, in the attic or home interior, algae on the roof does not have any ill consequences. However, for those who dislike the change in coloration, cleaning and preventing future algae outbreaks is fairly simple.