Reasons why Moss and Fungus grow on your Roof

For some of homeowners, the black streaks or stains they see on asphalt shingles is something new. These black streaks are called gloeocapsa magma, or GM, more commonly called mold or fungus. This is a bacteria that get their strength to survive through photosynthesis and the limestone filler found in the composition of shingles.

At US ROOFING Contractors located in Atlanta, Augusta, Savannah and Alabama, we give you the information that you need to know about Moss and Fungus on your Roof:

- In the past, shingles were constructed using felt and asphalt. Now that shingle composition has changed to mostly fiberglass and limestone, the GM blue-green algae thrives, using the limestone as their source of food. GM has a blue-green color. GM’s other self-protective factor is that it enjoys the cooler, shady areas of the roof where moisture is usually present.

- The American Roof Manufactures Association (ARMA)  state that GM is only an aesthetic issue, giving a home poor curb appeal. However, roofs with GM can attract other life forms that do cause damage.

- When algae and fungus get together, they form something new, lichen. Lichen is a photosynthetic fungus that has roots that wrap around the granules, feeding on the nutrients of the GM and the filler in the shingles. Once on the roof, lichen cannot easily be removed. Even if it dries out, it can come back to life when rain or moisture appears. Scrubbing or power washing the lichen will only do more damage.

- Another organism growing on your roof is moss, which is a plant, not a fungus or algae. Moss aides in shortening the life span of your roof because it retains moisture and in cold climates can freeze, causing damage to the shingle and granules.

- When you’re trying to decide whether to clean your roof or have a professional perform the cleaning, keep a few things in mind. Roof cleaning is not a DIY project. Some homeowners might want to tackle this project but without proper training and equipment, the end result could be a disaster.

- Shingles should not be cleaned using a high-pressure washing system. Professional roof cleaners have special equipment and most will clean the roof in the same manner as suggested by roof manufacturers: a low-pressure chemical treatment. A roof cleaning can remove black streaks or other discoloration for a fraction of the cost of replacement.

At US ROOFING Contractors our commitment is to make you feel safe!

If you are in need of roofing installation, roofing services or gutter services in the Atlanta, Augusta, Savannah or Alabama areas, please Call Us: (855) 877-6631 and visit us at  www.augustaroof.com for a free estimate.