Durox System

Durox is a modern construction material, whose versatility, light weight, thermal and acoustic properties make it the ideal solution for a wide variety of applications in all types of building.

Durox System is a fast build method that allows rapid construction of blockwork, offering the potential for better construction and enabling early commencement of the finishing trades. System comprises dimensionally accurate 620mm blocks for use with quick setting thin-layer mortar.


  • Cavity inner leaves
  • Cavity outer leaves
  • Solid External Walls
  • Solid Internal Walls
  • Foundation Walls


  1. Mortar Saving

    Durox system uses 80% less mortar than standard Aircrete blocks and smaller joints make for better air tightness.

  2. Low unit weight

    The light weight of Durox means more blocks per load, resulting in more environmentally-friendly transportation. 

  3. Size

    At 620mm long, Durox is 40% longer than conventional size blocks, meaning they lay at 7 per m2 including mortar joints. 

  4. Fast building blocks

    Independently monitored trials have demonstrated that Durox Supabloc is over 20% faster to build with than conventional size aircrete blocks and over 30% faster than dense blocks.

  5. Easy to work

    Cutting, chasing and finishing are all straightforward and quick to achieve using standard tools.  

  6. Excellent acoustic and thermal performance

    Good U-values and Rw values, as well as Robust Details help specifiers more easily meet or exceed Code for Sustainable Homes and BREEAM requirements.

  7. Speedy cost, effective construction

    Durox is lightweight, east to handle, and fast to lay, reducing build times and with thin joint, even faster.

Application Details

Durox System may be used in both housing and commercial buildings as the inner leaf of cavity walls, solid external walls, and for internal loadbearing and nonloadbearing partitions.

These blocks are available in three grades, System 500, 600, and 700, all of which are manufactured to exacting dimensional tolerances. These products are manufactured to coursing heights of 214mm and 299mm and in a range of thicknesses. For a full technical specification, size, availability and detailed guidance on the design and application of these blocks please contact our technical team who will be more than happy to assist.

System 600 or 700 may be used in cavity separating walls built to various Robust Details including E-WM-10 and E-WM-13. Both of these Robust Details may have a fully filled cavity using a mineral wool with a maximum density of 40kg/m3

Technical Properties

Durox System 500      
Block Width (mm) 100    
Unit weight (kg) 6.3    
Laid weight (kg/m2) 49    


Durox System 600      
Block Width (mm) 100 140  
Unit weight (kg) 8.6 12.1  
Laid weight (kg/m2) 66 93  


Durox System 700      
Block Width (mm) 100 140 200
Unit weight (kg) 9.3 13 18.5
Laid weight (kg/m2) 71 100 143

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