Industrial
- Insulating Glass – Residential
  - IG Spacers
  - IG Sealants
  In-Plant Glazing – Commercial OEM
- In-Plant Glazing – Residential
  Modular
Residential
- Residential Waterproofing Systems
  Methane Mitigation Systems
  - VaporLock
  Weather-Resistive Barrier Systems
  - EnviroDri
- Dampproofing & Restoration
  - Dampproofing
  - Restoration
  Window & Door Installation
Commercial

ExoAir® LEF

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).

Find Your Sales Rep

Product Details, Safety, and Installation

Data Sheets

	EN	FR	SP
ExoAir LEF Data Sheet
Tremco Polyurethane Foam Cleaner Data Sheet

Download

Application Instructions

	EN	FR	SP
ExoAir LEF Application Instructions

Download

SDS

	EN	FR	SP
ExoAir LEF SDS
ExoAir LEF SDS (CAN)
Tremco Polyurethane Foam Cleaner SDS

Download

Certification and LEED Letters

	EN	FR	SP
ExoAir LEF Certification Letter
ExoAir LEF LEED Letter

Download

Product Literature

	EN	FR	SP
Transitions Brochure

Download

Detail Drawings

	EN	FR	SP
AVB-CI-F-P-01: ExoAir 120 at Penetration - Option 1 (DWG)
AVB-CI-F-P-01: ExoAir 120 at Penetration - Option 1 (PDF)
AVB-CI-F-P-02: ExoAir 120 at Penetration - Option 2 (DWG)
AVB-CI-F-P-02: ExoAir 120 at Penetration - Option 2 (PDF)
AVB-130C-P-01: ExoAir 130 at Penetration - Option 1 (DWG)
AVB-130C-P-01: ExoAir 130 at Penetration - Option 1 (PDF)
AVB-130C-P-02: ExoAir 130 at Penetration - Option 2 (DWG)
AVB-130C-P-02: ExoAir 130 at Penetration - Option 2 (PDF)
AVB-CI-S-P-01: ExoAir 110/110AT at Penetration - Option 1 (DWG)
AVB-CI-S-P-01: ExoAir 110/110AT at Penetration - Option 1 (PDF)
AVB-CI-S-P-02: ExoAir 110/110AT at Penetration - Option 2 (DWG)
AVB-CI-S-P-02: ExoAir 110/110AT at Penetration - Option 2 (PDF)
AVB-CP-F-P-01: ExoAir 220/230 at Penetration - Option 1 (DWG)
AVB-CP-F-P-01: ExoAir 220/230 at Penetration - Option 1 (PDF)
AVB-CP-F-P-02: ExoAir 220/230 at Penetration - Option 2 (DWG)
AVB-CP-F-P-02: ExoAir 220/230 at Penetration - Option 2 (PDF)
AVB-SI-F-P-01: ExoAir 120 at Penetration - Option 1 (DWG)
AVB-SI-F-P-01: ExoAir 120 at Penetration - Option 1 (PDF)
AVB-SI-F-P-02: ExoAir 120 at Penetration - Option 2 (DWG)
AVB-SI-F-P-02: ExoAir 120 at Penetration - Option 2 (PDF)
AVB-130S-P-01: ExoAir 130 at Penetration - Option 1 (DWG)
AVB-130S-P-01: ExoAir 130 at Penetration - Option 1 (PDF)
AVB-130S-P-02: ExoAir 130 at Penetration - Option 2 (DWG)
AVB-130S-P-02: ExoAir 130 at Penetration - Option 2 (PDF)
AVB-SI-S-P-01: ExoAir 110/110AT at Penetration - Option 1 (DWG)
AVB-SI-S-P-01: ExoAir 110/110AT at Penetration - Option 1 (PDF)
AVB-SI-S-P-02: ExoAir 110/110AT at Penetration - Option 2 (DWG)
AVB-SI-S-P-02: ExoAir 110/110AT at Penetration - Option 2 (PDF)
AVB-SP-F-P-01: ExoAir 220/230 at Penetration - Option 1 (DWG)
AVB-SP-F-P-01: ExoAir 220/230 at Penetration - Option 1 (PDF)
AVB-SP-F-P-02: ExoAir 220/230 at Penetration - Option 2 (DWG)
AVB-SP-F-P-02: ExoAir 220/230 at Penetration - Option 2 (PDF)

Download

Technical Bulletins

	EN	FR	SP
Cold Temperature Sealant Application Rec.
Globally Harmonized System (GHS) Guide and Classification
Tremco Sealant Maintenance Instructions

Download

Standard Warranty

	EN	FR	SP
Joinery & Sealants Warranty

Download

ExoAir® LEF

Low-Expanding Polyurethane Foam

Basic Uses

Languages

Product Details, Safety, and Installation

Sign up for our newsletter

Products

Resources

About

Contact