UL Prospector

ExoAir® LEF 


Tremco. Inc.

ExoAir® LEF is a single-component, moisture-curing, gun-grade polyurethane foam. It is tack-free in 10 minutes and is resistant to decay, heat and water.

ExoAir LEF is designed for filling in gaps surrounding penetrations prior to ExoAir® air barrier membrane installation. It also can be used around windows where a sealant bead is being used to connect the window and air barrier system.

Manufacturer Keywords:

Tremco, ExoAir, ExoAir LEF, expanding foam



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