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.
Tear off additional layer of 50yr to lifetime shingle, $36.50 per square. Tear off wood shakes, $59.31 per square. Tear off rigid asbestos shingles, $185.04 per square. All above prices include hauling. You have to add in about $35 per square for 7-9/12's, $60 per square for 10-12/12's and $80 per square for 13/12+'s. Plus about $16 per square for two story.