Description
Hemelite Medium Dense | 7.3N
Hemelite Medium Solid Dense 7.3 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 impressive 7.3 N/mm² compressive strength. Designed for use in load-bearing walls above and below the DPC as well as beam and block floor infill, it’s a versatile solution for both internal and external masonry.
Weighing around 14.1 kg per block, Hemelite Medium Solid Dense 7.3 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, and its Class A1 non-combustible rating under BS EN 13501-1 provides up to 60 minutes of fire protection in wall constructions.
For external, bellow DPC blockwork 7.3N blocks or above are required.
Key Features & Benefits:
- Lightweight Yet Strong: Weighing less than traditional dense blocks, the Hemelite 7.3N is easier to handle and transport, yet maintains the same high strength and durability for reliable performance.
- Efficient and Safe: The reduced weight ensures quicker and safer laying, helping to save time, reduce labor costs, and minimise the risk of injury on-site.
- Versatile Applications: Suitable for both internal and external walls, this Hemelite block is ideal for use in load-bearing applications, beam and block floors, and various general construction projects.
- Fire Resistance: With excellent fire-resistant properties, this block offers added safety for structures, ensuring reliable protection in the event of a fire.
- Superior Acoustic Performance: Provides good sound insulation, contributing to quieter, more comfortable indoor environments.
- Customisation for Thermal Performance: Achieve your desired thermal performance with the addition of insulation, making it flexible for different project needs.
Technical Specifications:
- Dimensions (L×H×W): 440×215×100 mm
- Compressive Strength: 7.3 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
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