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Products

Concrete Blocks

GRS offers both solid and medium density blocks in a wide range of sizes and strengths. Designed with durability and quality in mind, our concrete blocks can be used for a wide range of building applications from housing to commercial projects. We deliver across the South West and South East of England with a wide range of vehicle types, from flat bed, artic and rigid cranes all available to deliver a high quality service.

 Application:

  • Inner and outer leaves of external walls
  • Infill block and beam flooring
  • Robust Detail Specifications
  • Hollow Blocks for retaining walls

The GRS solid dense 100mm 7.3N concrete block is one of the most versatile of all building products, suitable for every building application above and below ground, including cavity and solid walls, load-bearing and solid partitioning, and in block-and-beam flooring. GRS blocks are water and fire resistant, and give great sound insulation as well as contributing to a building's thermal mass as part of an overall low-energy design.

We currently supply blocks into East London and across the East of England – Essex, Hertfordshire, Cambridgeshire, Suffolk and Norfolk. (Maen Karne’s range of concrete products is available in West London, M4 and M5 Corridors, South West and West Country.

GRS BUILDING PRODUCTS - 0845 250 0793

Click here for our GRS Merchant Guide

TECHNICAL SPECIFICATION

Block Specification

Block Type

100mm

Material

Solid Dense Concrete 

Dimensions (mm)

440x215x100

Approx mean density (Kg/m³)

2000

Approx weight (kg)

18.5

Thermal Resistance 3%

Thermal Resistance 5%

0.093

0.087

Sound Insulations (Rw dB)

43

Number per pack

88

 

 

Concrete Blocks to BS EN 771-3
Category II Aggregate Concrete Masonry Units

Compressive Strength

7.3 N/mm²

Dimension Tolerance

Category D1 (+3mm   -5mm)

Bond Strength

0.15 N/mm² fixed valye

Reaction to Fire

A1

Water Vapour Diffusion Coeff. ES EN 1745

µ 5/15

Mean Density

2000kg/m³

Equivalent Thermal Conductivity BS EN 1745

^ 1.00 50%

W/(m.k)

Durability 

Detailed Guidance in PD 6697:2010: Table 15