UPC 2.0 High-Lift Closed-Cell Winter Spray Foam Insulation also provides moisture resistance, preventing the buildup of water that could lead to mold or mildew growth. The foam expands upon application to form a seamless, custom-fit layer that strengthens the building envelope and enhances its overall durability. By reducing air and moisture infiltration, this insulation solution ensures improved comfort, long-term energy savings, and better protection against the elements in colder climates.