Algae is a living organism that thrives on dust, pollen, and the organic materials that make up the roof. Dampness triggers its growth. Stains are usually more prominent on northern and western exposures and in heavily shaded areas. Algae grows on, under, and behind the tiny granules that cover the shingles and can harbor a number of molds. This results in unsightly stains and streaks on the roof. Roofs with algae stains absorb heat rather than reflect it, resulting in a super-heated attic and higher home cooling costs as well as reducing the natural life span of the shingles.
Lichens are a fungus, usually of the class Ascomycetes that grow symbiotically with algae, resulting in a composite organism that characteristically forms a crust-like or branching growth on shingle granules. Lichens put out root-like tentacles that penetrate deep into the shingle's organic, oil base for nourishment, eventually ruining them by creating dark spots, or pock marks where they grow.
Advantage Worx LLC
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Shane Southerland Owner/Operator
Serving Collier County.
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