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.
Removing old wooden shingles costs about 50 cents a square foot, while installing new shake or yellow pine shingles runs from $2 to $3.25 per square foot. Costs for a 2,000-square-foot roof are $1,000 for removing old material, and $4,000 to $6,000 for new shingles.