ARC TBM125/125 T-Barrier Masonry 125mm Party Wall, 125mm External Wall - 1200mm Long (Bag of 6) by ARC Building Solutions

This ARC T-Barrier Masonry closes external cavities at party wall junctions, providing fire protection, acoustic insulation, and thermal efficiency. Measuring 1200mm long, it suits 100mm party walls and 125mm external walls, and is supplied in bags of 6. It offers up to four hours of fire integrity, helping to achieve a zero U-value while reducing flanking noise and minimising thermal bypass. Manufactured from Euroclass A1 rockfibre mineral wool with an integral DPC, it meets building regulations and installs easily without mechanical fixings.

Key facts:

• Up to 4 hours fire integrity at party wall junctions
• Helps achieve zero U-value and reduce thermal bypass
• Provides acoustic insulation and cuts flanking noise
• Made from Euroclass A1 rockfibre mineral wool
• This T-Barrier closes cavities to maintain compliance and safety across residential and commercial construction.

Installation info:

Fit the barrier as brick and blockwork progresses. Position within the external cavity and compress against the party wall to form a continuous fire, thermal, and acoustic break.