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Tremco builders seal lef polyurethane foam aerosol case
Tremco Builders Seal LEF polyurethane foam aerosol can
BuilderSeal LEF is a versatile, one-component, UL classified, polyurethane foam, available in a straw grade or gun grade aerosol can, designed for window and door and retro-fit installations. BuilderSeal LEF is designed to reduce air infiltration/exfiltration in a variety of applications.
BuilderSeal LEF was designed specifically for dispensing as a bead for filling cracks, crevices and smaller cavities on flat or irregular surfaces. It can be applied to any clean surface to fill, insulate and seal around windows, door frame joints, beneath base plates, mud sills, T-joints, top plate penetrations, corner joists, exterior cracks, around utility panels, pipes, duct penetrations and other common applications.
