ExoAir® LEF

TDS  SDS  Application Instruction

Low-Expanding Polyurethane Foam

ExoAir® LEF is a single-component, CFC-free, all-season, high-performance, gun-grade polyurethane foam that performs as a thermal barrier. 

Basic Uses

• The ExoAir LEF is best suited around window and door frame joints but can also be used as an effective joint filler in hidden applications.
• LEF is most commonly used as a thermal and sound barrier.
• The product can be installed in temperatures ranging from 14 to 95° F (-10 to 35° C).