Shingle deterioration: When shingles get
old and worn out, they curl, split, and lose their waterproofing
effectiveness and are more easily blown off, torn, or lifted by wind gusts.
Moss can grow on wood shingles and shakes if they are kept moist
by poor sunlight conditions or bad drainage. Once it grows, moss holds
even more moisture to the roof surface, causing rot, and its roots
actually work their way into the wood.
Algae also grows in damp, shaded areas on wood or asphalt
shingle roof systems. Besides creating an ugly black-green stain, algae
can retain moisture, causing rot and deterioration.
Trees should be trim mined away from the
house to eliminate damp, shaded areas, and gutters should be kept clean to
ensure good drainage. Tree branches touching the roof will scratch and
gouge roofing materials as they are blow back and forth. Leaves retain
moisture and cause rot.
914- 497- 5900
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