AMBI-TITE 204 (HFO) is a rigid, closed cell spray polyurethane foam (SPF) insulation system. AMBI-TITE 204 (HFO) uses zero ozone depleting potential (ODP) blowing agents. AMBI-TITE 204 (HFO) shows excellent adhesion to a wide range of substrates typically found in building construction, as well as air seals and insulates in one step. AMBI-TITE 204 (HFO) meets the intent of the building codes for residential and commercial construction.