Tampa Roofing Contractor

How to Remove Mold from Roof Shingles

Mold may grow almost anywhere there is considerable amounts of moisture, including behind leaking pipes, damp basements, and on top of your roof. Algae, which has a black-greenish color, can break down roof shingles over time, causing damage and an unpleasant look.  Mold that is found on roof shingles manifests as black stains. Although it is more frequent in climates with hot, humid weather, mold may thrive in a variety of environments. It’s not a simple task to get rid of fungus, mildew, and other discoloration from a roof. As a result, numerous homeowners hire professional roofing contractors to finish the project.  If you are up to the challenge, spend some time to secure your property and acquire the necessary tools and supplies. Explore the techniques on removing mold from your shingles and why hiring the best professional contractor could be a good idea.

What Can Be Used to Remove Mold?

A simple bleach solution can typically be used to eradicate mold from roof shingles. Bleach, unfortunately, is hazardous to plant life, including grass, that encircle your home. Because the bleach solution will most likely run down the roof and into the land below, it’s critical to take the necessary steps to safeguard your property from the bleach’s effects. Plastic sheets should be used to protect plants, equipment, furniture, etc., in your yard. Using tarps to cover the grass will also prevent the bleach solution from absorbing into the soil.  If this isn’t possible, just sprinkle water on the grass as well as plants, to assist in reducing the bleach’s impact.

Proper Way to Use Bleach Solution to Remove Mold

Add 50% of chlorine bleach and water to a sanitized pail. Be sure to wear a breathing mask as well as rubber gloves. To the bleach solution, add a spoonful of trisodium phosphate. Fill a pump sprayer halfway with bleach solution. Spray your roof shingles liberally with the solution. Permit the bleach to soak for at least 15 minutes, once you have sprayed the roof shingles with the solution, based on the intensity of the mold growth. Rinse them well with a low-pressure garden hose. This will ensure the bleach solution is completely removed. Begin rinsing at the peak of the impacted shingles and move downward. Move your fingers throughout the shingles while you are wearing gloves. If slime is present on your shingles, use the bleach solution again and leave it on for an additional 10 minutes. The roof can then be rinsed once more.

What Can Be Done to Prevent Return of Mold?

To prevent further growth of algae and moss, you’ll also want to conduct a few key maintenance tasks. Trim tree limbs to permit direct sunlight to reach your roof.  Mold has a harder time growing in this environment. Clear away debris that collects on your roof routinely, including twigs and leaves. Debris can unfortunately absorb and trap moisture. To ensure proper water drainage, gutters must be washed on a regular basis. To avoid moss as well as algae growth, you might want to think about applying strips of zinc to your roof. If you choose to replace your roof, consider purchasing algae-resistant asphalt shingles.

What Precautions Should be Taken?

To prevent additional damage you must take specific steps, to ensure you are safe and don’t cause further damage. To begin, avoid using a pressure washer, since it can cause the shingles’ granules to fall off. This will additionally expose your roof making it more vulnerable to mold growth. You should never attempt to complete roofing projects alone. Climbing on your roof is dangerous and should only be done by a trained and reputable professional.


If you’re ready to replace your roof and you are looking for the best roofing contractor in Tampa, contact us via email or via phone at 813-962-7663.