ARC TCB Square is designed to act as a cavity barrier around penetrations through the external wall of low rise houses. Exceeding Part B’s requirement for EI30/15, ARC TCB Square is faster and easier to install, and provides a more robust solution, compared with either boxing in using cut sections of linear cavity barrier, or wrapping linear barriers around the pipe. ARC TCB Square is not a penetration seal or “fire stop” and does not replace the requirement for this where it exists, for example an intumescent pipe wrap. ARC TCB Square is designed to perform the function of a cavity barrier around openings in the wall.
| Length supplied | 350mm or 500mm Square |
| Insulation | Non-combustible Rockfibre Mineral Wool |
| Thermal conductivity | 0.037W/mK |
| Fire rating | Up to 60 minutes |
| Insulation performance | 15 minutes |
| Test standard | EN1366-4 |
| Construction type | Timber frame |
| Third-party certification | IFC certificate number: IFCC 1841 |
