Product Description

The 140mm 7.3N Hollow Concrete Block is a high-performance masonry unit ideal for both internal and external construction. Designed for strength, sound insulation, and ease of use, these blocks are suitable for load-bearing applications, retaining walls, and sound-separating structures. With excellent compressive strength (7.3N/mm²) and a lighter weight due to their hollow core, they provide a balance of durability and efficiency.
These hollow dense blocks are engineered with low-carbon cement alternatives, offering up to 50% lower embodied carbon compared to traditional OPC mixes. Whether used above or below the damp proof course (DPC), they support sustainable construction without compromising on performance.

Key Features:

• Multi-purpose use – Suitable for internal & external walls, retaining walls, and firebreaks
• Compressive strength – Rated at 7.3N/mm², suitable for load-bearing applications
• Sound insulation – Excellent acoustic performance (up to 51dB), ideal for noise-sensitive environments
• Lightweight & efficient – Easier to handle than solid blocks, speeding up installation
• Sustainable – Made with low-carbon materials, reducing environmental impact
• Fire resistant – A1 fire-rated, offering protection in firebreak structures
• Versatile voids – Voids can be left unfilled for drainage or reinforced for added strength
• Meets standards – Manufactured to BS EN 771-3:2011 & EN1996-1 Group 1 standards