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ROOF PROBLEMS?
Typical roof problems....
WHAT CAUSES THESE PROBLEMS
ALGAE GROWTH Algae growth causes a dark discoloration on roofs. The algae is usually brown to black in color which results in a streaked, dirty looking rooftop. It can be mistaken for soot, dirt or tree droppings, which typically produce only localized discoloration. It's caused by the growth of air-borne algae which deposits on your roof. The good news is that algae growth does not affect the service life of your roofing material. It occurs most often in warm, humid climates such as the Southeast (where algae-resistant shingles are available).
BLISTERING Blistering is caused by moisture in the shingle.
BUCKLING
Buckling is caused by improperly applied
felt, wrinkled underlayment, roof deck movement, spacers not
used in between roof deck boards, poor roof ventilation, new
shingles applied over old, and rough shingles.
CEILING SPOTS Ceiling spots are caused by leaks in the roof.
CURLING Curling is caused by high nails, lack of back coating, under-saturation of asphalt felt in organic shingles, lack of ventilation, and improper number of fasteners.
DAMAGED FLASHING Damaged Flashing is caused by improper installation on a new roof, drying and cracking on an old roof, dented by improper nailing, and settling of the structure.
MISSING GRANULES Granule loss does not affect the service life of the shingles unless granules can be seen missing on the surface of the shingles, thus exposing the asphalt or Fiberglas® mat.
MISSING SHINGLES Missing Shingles are usually caused by improper fastening and/or exposure to high winds.
ROTTING Rotting is caused by absorption of moisture by the mat at the core of the shingle. This is a common problem with organic-based shingles.
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This site was last updated 02/23/09