Plastic building and construction products such as rigid foam board and spray foam insulation and air sealants are used to meet stringent energy codes, green building standards, and healthy building guidelines. Their use makes homes and buildings more environmentally friendly. Flame retardants are used to help foam plastics meet important fire safety standards. These fire safety standards are incorporated into building code provisions that have regulated the safe use of plastic building products for over 30 years; provisions that have proven to be effective at contributing to fire safety of buildings.