Willseal FR-V Sealant | Pre-Compressed Fire-Rated Expansion Joint Solution
The Willseal FR-V Sealant is a pre-compressed, fire-rated vertical expansion joint system that delivers exceptional fire, smoke, and water protection for demanding wall assemblies. Built with a sound-attenuating closed-cell foam core, an integrated smoke barrier, and a factory-applied sealant coating, FR-V provides a durable, code-compliant solution for new builds and retrofit applications. Designed for use in 1-, 2-, and 3-hour fire-rated joints, this Tremco system ensures safety and performance while minimizing on-site labor.
Key Benefits of the Willseal FR-V Sealant
- Rated for 1-, 2-, and 3-hour fire-rated joint applications
- Integrated smoke barrier prevents the passage of toxic gasses and fumes
- Watertight vertical seal with closed-cell foam core for moisture protection
- Accommodates ±50% joint movement for dynamic and static assemblies
- Supplied pre-compressed for fast, non-invasive installation
- Available with tamper-resistant, high-durometer sealant coatings or uncoated options
- Ideal for vertical expansion joints, isolation joints, retrofits, and architectural finishes
Common Applications
Willseal FR-V Sealant is ideal for primary vertical expansion joints, vertical wall systems, retrofit isolation joints, and large architectural joints where durability and fire protection are critical. Its integrated design streamlines installation while maintaining full compliance with fire and smoke standards.
Packaging and Performance
Delivered as a ready-to-install pre-compressed system, FR-V minimizes field labor, reduces anchoring needs, and delivers a watertight, tamper-resistant seal for long-lasting performance in commercial and institutional projects.
Product Properties
| Property | Value |
|---|---|
| Movement Capability | ±50% |
| Fire Rating | 1-, 2-, and 3-hour rated |
| Foam Type | Closed-cell with smoke barrier |
For a prefabrication-focused alternative, view the Willseal PF100 Sealant. Additional Tremco systems are available at TremcoSealants.com.




