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.
The cost of materials for metal shingles ranges from $2.5 â $4 per sq. ft., depending on the manufacturer, and metal they are made from. These shingles typically last 40+ years.While they are not as cheap as corrugated panels, they offer great curb appeal, and superior protection against rain, snow and ice.aterial cost of an R-panel is about $1.10 per sq. ft., and a âlifetimeâ (yeah, right!) asphalt shingle will cost about $1 per sq. ft. In Midwest states, the complete system cost for both types of roofing is fairly equal.