Do you have streaks and stains on the shaded areas of your roof? Many homeowners think it is impossible to rid their roofs of stains. However, with a little knowledge, you can make your roof look new again.
What Causes Staining?
Streaks and stains on your roof look like mold; however, those streaks are actually colonies of algae that feed on the moisture and limestone in your shingles. New shingles are treated with an algaecide that keeps algae at bay for approximately 10 years; however, after 10 years colonies of algae begin to grow, causing streaking and damage to your roof.
Products to Avoid
You can find many suggestions on chemicals to use on your roof online; however, some treatments can actually cause damage to your shingles, gutters, downspouts and flashings. These chemicals can also damage the plants in your landscape. Products containing bleach and lye are often used to clean roofs by do-it-yourselfers.
However, these products should be avoided. Instead, you should use a product containing Sodium Percarbonate. Sodium Percarbonate is oxygenated bleach that does not cause corrosive damage to your roof or the plants in your landscape.
Check the Weather
Before beginning a roof-cleaning project, look at your local weather forecast. You want to choose a day that is overcast, slightly cool and not windy. On hot, windy days, the cleaner may evaporate too quickly. By choosing a day when it will be partly cloudy and cool, you can ensure the product remains on the shingles long enough to dislodge and destroy the colonies of algae.
The Day Before
The day before you clean your roof, you will need to repair any damaged shingles and clean out your gutters. Move all lawn furniture away from the house and cover all vegetation. This will protect your lawn furniture and plants from damage and discoloration. Damage and discoloration occur as the roof is rinsed off; therefore, take precautions to protect your outdoor furniture and landscape.
Cleaning Your Roof
Begin by wetting your roof down with water to cool the shingles. Dilute the concentrated roof cleaner following the manufacturer's recommendations. Once the cleaner has been diluted, pour it into a pump sprayer. Apply the cleaner liberally to your entire roof. Allow the product to soak for a half an hour. Once 30 minutes have passed, rinse your roof. Begin at the roof's peak and rinse in a downward motion, ensuring that each shingle is thoroughly rinsed before moving to the next one.
Removing roof stains from your house not only improves the curb appeal of your home, but it also helps protect your roof from damage caused by colonies of algae. Use the techniques listed above for a beautiful algae-free roof.
To learn more, contact a company like HomeTowne Roofing with any questions or concerns you have.Share
3 March 2015
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