New construction materials, fresh paint, flooring, and adhesives continue off-gassing chemicals for months after installation, creating elevated VOC concentrations in enclosed spaces. Newly renovated offices and schools face similar risks from building materials and furnishings. Even new furniture and carpeting in existing buildings can significantly increase indoor VOC levels. The problem is compounded in energy-efficient buildings with limited air exchange that trap chemical emissions indoors. Professional testing helps identify when off-gassing periods have subsided and indoor air returns to safe levels, protecting occupants during the highest-risk timeframes.