AMBI-TITE 201 (245fa) is a closed cell spray foam insulation. The controlled chemical reaction allows for smoother surface and more uniform application over a wide temperature range. AMBI-TITE 201 (245fa) uses zero ozone depleting potential (ODP) blowing agents. AMBI-TITE 201 (245fa) shows excellent adhesion to a wide range of substrates typically found in building construction, as well as air seals and insulates in one step.