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Recent Listings
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FASTFRAME - Morgan Hill
Morgan Hill, South Bay, San Francisco Bay Area
12-03-2008
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Breakthrough Fitness
Santa Rosa, North Bay, San Francisco Bay Area
Santa Rosa Personal Trainers
12-02-2008
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RINALDO'S HANDYMAN SERVICE.
SOUTH SAN FRANCISCO, San Francisco, San Francisco Bay Area
FOR ALL YOUR RESIDENTIAL & COMMERCIAL REPAIRS.
11-25-2008
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Happy Mozart Music School
San Mateo, Peninsula, San Francisco Bay Area
11-19-2008
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IRS & State Tax Resolution Services
Fremont, East Bay, San Francisco Bay Area
Eliminate IRS & State Tax Debt
11-18-2008
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Drywall
Drywall, also commonly known as gypsum board, plasterboard (UK, Ireland, Australia), Gibraltar board or gib (New Zealand - GIB being a trademark of Winstone Wallboards), rock lath, sheetrock (a trademark of United States Gypsum Company), gyprock (Canada and Australia - likely a portmanteau of "gypsum board" and "sheetrock"), or rigips (Germany and Eastern Europe - after the Rigips brand) is a common manufactured building material used globally for the finish construction of interior walls and ceilings.
A drywall panel is made of a paper liner wrapped around an inner core made primarily from gypsum plaster, the semi-hydrous form of calcium sulphate (CaSO4.½ H2O). The raw gypsum (mined or FGD) must be calcined before use. Flash calciners typically use natural gas today. The plaster is mixed with fiber (typically paper and/or fiberglass), foaming agent, various additives that increase mildew and fire resistance, and water and is then formed by sandwiching a core of wet gypsum between two sheets of heavy paper or fiberglass mats. When the core sets and is dried in a large drying chamber, the sandwich becomes rigid and strong enough for use as a building material. Drying chambers typically use natural gas today. Depending on plant efficiency and energy costs, 25% to 45% of drywall cost today is related to energy, primarily natural gas.
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