SECTION 09 29 00 (SECTION 09250) - GYPSUM BOARD SPECIFIER NOTE: resource management Mining raw materials (gypsum, limestone, clay, talc, mica, and perlite) produces soil erosion, pollutant runoff, and habitat loss. Gypsum is a non-renewable although relatively abundant resource. Pre-consumer recycled gypsum may be obtained from synthetic sources such as Flue Gas Desulfurization and acid neutralization in chemical processes. Also, clean construction waste can be processed to renew the gypsum in the core. Calcining (heating at 325 - 340 degrees F to become the hemihydrate of calcium sulfate, stucco) produces particulate emissions, including: calcium sulfate dihydrate, calcium sulfate hemihydrate, anhydrous calcium sulfate, and gangue. Paper (cellulose) is a renewable resource. Paper manufacture is considered water intensive and energy intensive. It generates air and water pollutants; however, it should be noted that the paper industry has made significant progress in converting its papergrade bleached kraft mills' bleaching processes to elemental chlorine free (ECF) bleaching. Effluents from mills using ECF are "non-detect" for dioxin, using the EPA approved method with a minimum level of 10 parts per quadrillion (ppq). toxicity/IEQ: Additives used to produce waterproof gypsum board ("green board") and fire resistant gypsum board may include VOCs. The paper backing may contain chemicals from previous uses (most paper backing contains recycled materials) and additives or chemicals used in the production of the paper itself. VOCs may be emitted from taping compounds and finishes during the curing process. performance: Performance is comparable for green methods and standard methods.
PART 1 - GENERAL 1.1 SUMMARY A. This Section includes: 1. Interior gypsum wallboard. 2. Exterior gypsum board panels for ceilings and soffits.
SUBMITTALS A. Product data. Unless otherwise indicated, submit the following for each type of product provided under work of this Section:
SPECIFIER NOTE: Green building rating systems often include credit for materials of recycled content. USGBC-LEED™ v3, for example, includes credit for materials with recycled content, calculated on the basis of pre-consumer and post-consumer percentage content, and it includes credit for use of salvaged/recovered materials. Green Globes US also provides points for reused building materials and components and for building materials with recycled content. 1. Recycled Content: 09 29 00 (09250) - 1 Gypsum Board
Whole Building Design Guide Federal Green Construction Guide for Specifiers
a. b. c. d.
Indicate recycled content; indicate percentage of pre-consumer and postconsumer recycled content per unit of product. Indicate relative dollar value of recycled content product to total dollar value of product included in project. If recycled content product is part of an assembly, indicate the percentage of recycled content product in the assembly by weight. If recycled content product is part of an assembly, indicate relative dollar value of recycled content product to total dollar value of assembly.
SPECIFIER NOTE: Specifying...