Dense Block – High‑Strength Solid Masonry Block with 7.3–10.4 N/mm² Normalised Strength

The Dense Block is a high‑performance solid masonry unit engineered for strength, stability, and long‑term durability in structural construction. Manufactured with precise dimensional tolerances and a robust dry density of 1960 kg/m³, this block is ideal for load‑bearing walls, foundations, and projects requiring exceptional compressive strength and reliability.

Available in 100 mm and 140 mm widths, the Dense Block features a standard finish, Group 1 (solid) EC6 classification, and a normalised mean unit strength of 7.3–10.4 N/mm². Its perpendicular load direction ensures optimal structural performance, while the <0.6 mm/m dimensional stability guarantees consistent installation accuracy.

With a shear bond strength of 0.15 N/mm², A1 fire classification, frost resistance above 7.2 N, and a thermal conductivity value of 1.00 W/(m·K), this block delivers superior performance across structural, thermal, and durability requirements. Designed for modern construction standards, it offers dependable strength and long‑lasting resilience.

Key Specifications

• Dimensions:

  • Length: 440 mm

  • Width: 100 mm (18.8 kg) & 140 mm (26.6 kg)

  • Height: 215 mm

• Tolerance: D1

• Dry Density: 1960 kg/m³

• Group (EC6): Group 1 (solid)

• Normalised Strength: 7.3–10.4 N/mm²

• Load Direction: Perpendicular

• Category: Cat II

• Dimensional Stability: <0.6 mm/m

• Shear Bond Strength: 0.15 N/mm²

• Reaction to Fire: A1

• Permeability: 5/15 mm²

• Thermal Conductivity: 1.00 W/(m·K)

• Durability: Frost resistant >7.2 N

• Sound Insulation: Group 1

A reliable choice for structural walls, commercial builds, residential projects, and high‑load applications, the Dense Block ensures consistent performance, safety, and long‑term durability.