Chemical Emission Rates from Building Materials Measured by a Small Chamber

A small-scale chamber, ADPAC, was developed to measure chemical emission rates from building materials. Measurement results from wall covering adhesive, flooring, and insulation materials were shown in this paper. The test pieces with wall covering adhesives were produced at the day of measurement. First measurement was conducted 15 hours after the production of the test piece, when chemical concentration in the chamber was considered to be steady state. Measurements were repeated after 4, 7, 14, and 28 days. It was found that emission of formaldehyde was observed even for the product indicated of “non-formalin”. Emission rates were higher during the first day, but decreased rapidly after 1 or 2 weeks. Flooring materials and thermal insulation material EPS were also evaluated.