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Algae! Yuck!


Algae can grow on roofs due to the combination of moisture, warmth, and sunlight, which create an ideal environment for their growth. Roofs that are shaded or receive little sunlight are more likely to develop algae, as the lack of sunlight prevents the roof from drying out and creates a moist environment that encourages algae growth.

To prevent algae growth on your roof, you can take several measures:

  1. Regularly clean your roof: Regularly removing debris, leaves, and other organic matter that can accumulate on your roof can help prevent algae growth. You can use a leaf blower or a soft-bristled brush to remove the debris.

  2. Trim trees: Trimming trees and other vegetation around your home can help increase sunlight exposure to your roof, which can help prevent algae growth.

  3. Install zinc or copper strips: Zinc and copper strips installed at the ridge of your roof can help prevent algae growth. These metals release ions that are toxic to algae, preventing them from growing.

  4. Apply a roof treatment: There are various roof treatments available that can help prevent algae growth. These treatments typically contain a fungicide that can kill algae and other organic matter. However, it is important to choose a treatment that is safe for your roof material and follow the manufacturer's instructions carefully.

By taking these preventive measures, you can reduce the likelihood of algae growth on your roof and help maintain its appearance and longevity.


Mills Roofing uses Atlas Shingles with Scotchgard Shingle Protector! This innovative technology, which includes copper-containing granules made with a proprietary 3M porous ceramic coating, allows copper ions to release slowly over time, helping to prevent the ugly black streaks caused by algae. With Pinnacle® Pristine shingles, your roof will look newer longer, maintaining its beauty for years to come!


If you need your roof replaced give us a call to schedule your FREE consultation!


540-371-6187

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