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If this is not successful, repeat and very gently scrub the affected area with a soft bristle brush in order not to damage or dislodge the mineral granules that protect the shingles from the sun's rays.
Experts say the mold or fungus that develops on some roofs can cause premature loss of the mineral granules that protect asphalt shingles.
Because the base components of shingles, including asphalt, mineral granules and fiber, are so similar to asphalt paving materials, ground shingles can be quite easily incorporated into hot-mix asphalt and other parching materials.
Signs of a weathered roof are excessive loss of protective mineral granules and cracked, curled or missing shingles.
The mineral granules protect the shingles from the sun's ultra-violet rays, and give the shingles color and added protection against fire.
Organic shingles consist of it wood-fiber base that is saturated with asphalt and coated with colored mineral granules.
Fiberglass shingles consist of a fiberglass mat, top-and-bottom layers of asphalt, and mineral granules.
First, they cover the asphalt with hard mineral granules to block the UV waves (and make our roofs colorful).
Complementary to the external fixator type of Hoffman II, a system of cables orthopedic plates for periprosthetic fracture, lamellar systems, stabilizing fractures of the neck of the humerus, steel nails reconstructive different, screws, plates, stabilizing fractures of the neck of the humerus, nails reconstructive different screws plates for proximal humerus plates to stabilize fractures of the clavicle, fractures stabilizer: within the distal humerus radius, within the shaft of the humerus and radius, within the shaft of the humerus and the radial plate to the shaft of the femur / tibia, the plate TL, various mineral granules for filling bone defects, plates for distal part of the humerus.
Approximately 400 m of painting at GK-joists, about 200 m of ornament painting on GK-joists, approximately 300 linear meters of painting decorative profiles of mineral granules, about 12 mA of paint jambs of sandstone, about 1300 m of acrylic joint, about 150 mA painting on plaster, about 60 sqm painting on drywall.