Willseal | UL Classified Fire Rated Systems
Head of Wall
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| UL Listing Sealant Name |
Fire Rating (Hours) |
Nominal Joint Width (inches) |
Foam Depth (inches) |
Movement | Substrate | |
|---|---|---|---|---|---|---|
| Min | Max | |||||
| HW-D-0700 – conf. A FR joint, FR joint UC |
3 | 1/2 in. | 1-7/8 in. | 3 or 4 in. | ± 50% | Concrete |
| HW-D-0700 – conf. B FR joint UC |
3 | 1/2 in. | 1-7/8 in. | 3 or 4 in. (4 in. foam required for 3 hour rating) |
± 50% | Concrete |
| HW-D-1101 – conf. A FR joint, FR joint UC |
3 | 2 in. | 3-3/8 in. | 4 in. | ± 50% (2 in. to 3 in.) + 25% / – 50% (2 in. to 3-3/8 in.) |
Concrete |
| HW-D-1101 – conf. B FR joint UC |
3 | 2 in. | 3-3/8 in. | 3 or 4 in. | ± 50% (2 in. to 3 in.) + 25% / – 50% (2 in. to 3-3/8 in.) |
Concrete |
Reprinted from the Online Certifications Directory with permission from UL
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