Description

Hemelite Medium Dense | 3.6N

Hemelite Medium Solid Dense 3.6 N bridges the gap between lightweight aircrete and heavy dense blocks. Its reduced density improves thermal efficiency and sound insulation while easing manual handling, yet it still delivers a dependable 3.6 N/mm² compressive strength. Designed for use in load-bearing walls above and below the DPC as well as beam and block floor infill (for 7.3N or above), it’s a versatile solution for both internal and external masonry.

Weighing around 14.1 kg per block, Hemelite Medium Solid Dense 3.6 N offers a handling advantage over traditional dense blocks while retaining its structural strength. Its thermal conductivity of approximately 0.51 W/m·K helps meet Part L energy targets when combined with a 150mm cavity and insulation.

Because it provides more than 60 minutes of fire protection in wall constructions, it achieves a Class A1 non-combustible rating under BS EN 13501-1.

For external, bellow DPC blockwork 7.3N blocks or above are required.

Key Features & Benefits:

• Lightweight and Easy to Handle: Weighing just 14.1kg per block, the Hemelite 3.6N is lighter than standard dense blocks, making it easier to transport, handle, and lay, thus reducing worker fatigue and the risk of injury.
• Strength and Durability: Despite its lighter weight, the Hemelite block offers impressive compressive strength of 3.6 N/mm², ensuring the reliability and longevity of your build.
• Quicker and Safer to Lay: The reduced weight speeds up the construction process and minimises handling time, improving overall project efficiency.
• Fire Resistant: It achives 2 hours of fire resistance in load bearing walls and 4 hours for non load bearing walls.
• Thermal Insulation: With a thermal conductivity of 0.51 W/mK, the block offers moderate thermal performance, helping with energy efficiency in your building projects.
• Versatile Applications: Ideal for use in both internal and external walls, as well as in load-bearing applications. For block and beam floors see 7.3N hemelite.

Technical Specifications

• Dimensions (L×H×W): 440×215×100 mm
• Compressive Strength: 3.6 N/mm²
• Dry Density: 1450 kg/m³
• Thermal Conductivity: 0.51 W/m·K
• Fire Rating: Class A1 (non-combustible); 60 min fire resistance in wall constructions
• Sound Insulation: 44 dB reduction in partition walls (meets Part E)
• Unit Weight: 14.1 kg per block
• Blocks per Pack: 72 blocks (7.2 m² coverage)
• Mortar Joint: 10 mm recommended (BS 8000-3 compliant)
• Standards & Marking: BS EN 771-1 manufactured; UKCA marked
• Moisture Management: Requires external render or cladding; not for fair-faced exposure