ExoAir Flex Foam
Flexible Low-Expansion Polyurethane Foam
ExoAir Flex Foam is a single-component, high-performance polyurethane sealant formulated to deliver superior thermal protection and long-lasting flexibility. Designed for dynamic joints and penetrations, this low-expansion foam provides an exceptional movement range of ±15%, accommodating thermal shifts and building movement without cracking or bowing windows and doors. It is a fast, reliable solution for professional sealing tasks.
Key Benefits of ExoAir Flex Foam<
- Lasting Flexibility: Ideal for dynamic joints, maintaining a durable seal without cracking over time.
- Minimal Expansion: Low-pressure formulation prevents window distortion during application.
- Fast Installation: Ready to tack in 10 minutes and can be trimmed in just 45 minutes.
- Low Temperature Application: Installs effectively even in winter conditions.
Common Applications
- Dynamic joints in building envelopes
- Sealing around windows and doors
- Base plates and structural transitions
- Pipe penetrations and cracks
Packaging & Installation
ExoAir Flex Foam is applied using a foam dispensing gun for precision control. Its convenient application and quick set times make it ideal for fieldwork and time-sensitive projects. With reliable thermal insulation and flexibility, it supports both commercial and residential air sealing needs.
Product Properties
| Property | Value |
|---|---|
| Application Method | Foam dispensing gun |
| Application Temperature | 27 to 95 °F (-3 to 35 °C) |
| ASTM C518: Thermal Resistance per Inch | 3.64 R/in |
| Service Temperature | -40 to 194 °F (-40 to 90 °C) |
| Technology | Polyurethane foam |
Also see ExoAir 210AT for self-adhered vapor barriers. Visit Tremco Sealants for more solutions.




