ARC U-Barrier has been fire tested in accordance with the principles given in EN1366-4, achieving 240 minutes fire integrity and 180 minutes insulation within a masonry construction.
ARC U-Barrier is compressed between the top of the spandrel panel and underside of the roof covering, creating a fire and thermal break.
NHBC 7.2.16 recommends a 25mm gap between the separating wall and the top of adjacent roof trusses, which should be filled with mineral wool. ARC U-Barrier satisfies this recommendation.
The person installing the U-Barrier should first familiarise themselves with the datasheet, ensuring the correct product is being fitted into the cavity.
| Insulation material | Rockfibre mineral wool |
| Thermal conductivity | 0.037W/mK |
| Fire integrity | Up to 240 minutes |
| Insulation | Up to 180 minutes |
| Test standards | EN1366-4 |
| Mass | Data available on request |
All performance claims can be evidenced in IFCC 1961.
Test reports, third party certification and MSDS available on request.
Is this product fire rated?
ARC U-Barrier has been fire tested in accordance with the principles given in EN1366-4, achieving 240 minutes fire integrity and 180 minutes insulation within a masonry construction.
Can U-Barrier be mechanically fixed?
Yes, the polythene flanges can be used to mechanically fix, typically a staple, to the spandrel panel.
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