Off-gassing is a major indoor air quality issue when new household purchases or improvements are made. Off-gassing is the evaporation of volatile chemicals at normal atmospheric pressure. Building materials release chemicals through evaporation and can continue to off-gas for years after materials are initially installed, so we continually breathe in these chemicals as we work, sleep and relax in our homes. Materials such as paints, stains, varnishes, carpet, insulation, flooring, kitchen Continue Reading