Photomicrograph of a volcanic lithic fragment (sand grain); upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0.25 millimeter. Volcanic rocks are usually fine-grained or aphanitic to glass in texture. They often contain clasts of other rocks and phenocrysts.
I paid almost $13,000 to have Duration Premium shingles installed on my central Florida home in late 2007. I went with Owens Corning Duration Premium shingles because of their premium quality, their lifetime warranty and their high wind resistance. Within 3 months of the installation, I started having leaks.
Some premium shingle profiles can cost as much as $50.00 per bundle, while requiring four or five bundles, depending on the profile, to cover a square of roofing surface. Thus, the cost of premium shingles alone can be as high as $200 to $250 per square, not including the cost of other necessary materials and supplies. Did you know?