Change: COST: $14 TO 20 PER SHEET PER POPULAR SCIENCE MAG=======================================================================\THERMAROCK http://www.seriousmaterials.com/html/thermarock.html ThermaRock XI (eXtreme Insulation) is the first drywall that reduces a building’s energy use for operations. Standard gypsum drywall provides little thermal insulation, with an R value   View changes from previous version. (Word count: 326)

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Change: Standard gypsum drywall provides little thermal insulation, with an R value of about 0.5. ThermaRock panels deliver R2.5 to R4.1. This much higher-performance can save   View changes from previous version. (Word count: 316)

Change: Created by jimmiller5417@gmail Nov 23 2008, 11:44 AM EST for: no reason given