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The Tarmac Hemelite Standard 100mm 3.6N concrete block is a medium-density lightweight aggregate unit engineered for everyday masonry work where dependable strength, thermal performance, and ease of installation matter. Manufactured by Tarmac, these blocks deliver a high strength-to-weight ratio, making them easier to handle on site while providing robust performance in a wide range of building applications.
Ideal for general walling above and below the damp-proof course, Hemelite Standard blocks are suitable for both internal and external walls where strength, sound insulation, and fire resistance are required.
3.6 N/mm² compressive strength, offering reliable performance for general blockwork and light structural use
100mm width perfect for internal partitions, cavity wall inner leaves, and lightweight wall builds
Medium density lightweight aggregate concrete, easier to handle than dense blocks and helps reduce overall build weight
Good thermal performance and sound insulation, supporting U-values and robust detail solutions
Excellent fire resistance in masonry wall configurations
Textured finish suitable for plastering, rendering, or dry-lining finishes
Pack size: 72 blocks — ideal for controlled site usage and efficient ordering
Internal partition walls
External walls above and below DPC
Cavity wall inner leafs in residential and commercial builds
Separating walls and party wall constructions
Beam and block floor infill walling
Product: Tarmac Hemelite Standard Block
Material: Medium density lightweight concrete
Dimensions (L × W × H): 440 × 100 × 215 mm
Compressive Strength: 3.6 N/mm²
Thermal Conductivity (approx.): ~0.51 W/m·K
Fire Rating: Class A1 (non-combustible)
Pack Size: 72 blocks
Weight per Block: ~14 kg
Standards: BS EN 771-1/3 compliant
Typical Laid Weight: ~142 kg/m²
We supply trusted, practical masonry products that balance performance with on-site ease of use. The Tarmac Hemelite Standard 100mm 3.6N blocks provide a combination of strength, insulation performance, and easier handling, making them a dependable choice for both trade professionals and self-builders
