STP922: Formaldehyde Emissions from Selected Fibrous Glass Insulation Products

    Matthews, TG
    Research scientist, Oak Ridge National Laboratory, Oak Ridge, TN

    Westley, RR
    Graduate student, University of Tennessee, Knoxville, TN

    Pages: 15    Published: Jan 1987


    Abstract

    The formaldehyde (CH2O) emission potential of fibrous glass insulation acquired from the three largest manufacturers in the United States has been investigated. Screening measurements of unfaced and kraft-faced R-19, foil-faced R-11, and 25.4-mm (1-in.) unfaced insulation made with a formaldehyde surface emission monitor (FSEM) demonstrate low interproduct and intermanufacturer variation in CH2O emission rates. The FSEM screening data and environmental chamber measurements of unfaced R-19 insulation taken at 23°C and 50% relative humidity both indicate CH2O emission rates of 0.02 ± 0.01 mg/m2 h after one to three months of product conditioning in atmospheres of low CH2O concentration. Threefold to fourfold increases in CH2O emissions were measured in environmental chamber tests taken at 38°C and 68% relative humidity, simulating potential seasonal exposures in attic and wall cavities adjacent to indoor compartments. However, a two-compartment, diffusion model describing the potential impact of attic insulation at 38°C and 68% relative humidity on indoor CH2O concentrations indicates a maximum increment of 0.03 mg/m3 (0.02 ppm).

    Keywords:

    formaldehyde, fibrous glass insulation, formaldehyde surface emission monitor, environmental chamber, indoor concentrations, thermal insulation


    Paper ID: STP18484S

    Committee/Subcommittee: C16.22

    DOI: 10.1520/STP18484S


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