Smelly foam is rare, but when the problem occurs, everyone gets a headache
A ventilation fan should be set up before the contractor begins spraying any foam. This illustration appears on page 11 of the Health and Safety Product Stewardship Workbook for High-Pressure Application of Spray Polyurethane Foam (copyright: American Chemistry Council). The Workbook is available for download at www.spraypolyurethane.org.
Should spray polyurethane foam be installed in an occupied house? Hundreds of spray foam contractors around the country are happy to answer “Yes!” In almost all cases, these jobs end successfully: the spray foam improves the home’s thermal performance and the homeowner is happy.