Topcrete Standard

Topcrete is a range of dense aggregate blocks available in a variety of formats and suited to a number of high loadbearing applications.

Topcrete dense aggregate blocks are suitable for use in walls above and below ground and in block and beam floors. They have a proven high level of technical performance.

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  • Walls above and below ground
  • Separating Walls
  • Solid and Cavity Walls above and below DPC
  • Beam and Block Floors


  1. Robust and Durable

    Suitable for use in all types of buildings.  

  2. Excellent acoustic performance

    Good Rw values, as well as Robust Details.  

  3. Range of strengths

    Range of options available for wide range of specifications.  

  4. Sound Insulation

    Excellent sound insulation properties that comply with Robust Detail specifications and the Building Regulations.  

  5. Easy to decorate

    Ideal background for drylining, plaster, rendering and fixings.  

Application Details

For general use in walls above and below ground and in beam and block floors. They offer high loadbearing potential, excellent sound insulation and are extremely robust and durable. They are ideal for finishing with render, cladding, plaster or drylining.

Separating Walls
The range of Topcrete solid blocks can be used with a number of Robust Detail constructions, including those with fully filled cavities, avoiding the need for pre-completion testing. In addition these constructions may be used with various robust detail separating floors.

Loadbearing walls
Hemelite is available in a range of strengths from 3.6 to 22.5N/mm2 which make them suitiable for a variety of structural applications from domestic to commercial building.

Topcrete blocks provide excellent periods of fire resistance which can satisfy building regulations and other imposed requirements e.g those of insurers. All Topcrete products conform to a fire rating of Class A1 to BS EN 13501-1:2002

Sound insulation
Topcrete blocks may be used to provide acoustic insulation between internal rooms to meet the requirements of Part E building regulations.

Topcrete blocks are producted to comply with 'Category 1' manufacturing control to BS EN 771-1 to 16.

Technical Properties

Topcrete Solid (7.3n, 10.4n, 17.5n & 22.5n)      
Block Width (mm) 100 140 -
Unit weight (kg) 19.0 26.6 -
Laid weight (kg/m2) 200 280  


Topcrete Solid Midi (290 x 215mm) (7.3n, 10.4n, 17.5n & 22.5n)      
Block Width (mm) - 140 -
Unit weight (kg) - 17.5 -
Laid weight (kg/m2) - 280 -


Topcrete Cellular Multicore (7.3n)    
Block Width (mm) 140 -
Unit weight (kg) 18.5 -
Laid weight (kg/m2) 203 -


Topcrete Hollow (3.6n & 7.3n)      
Block Width (mm) - 140 215
Unit weight (kg) - 17 27
Laid weight (kg/m2) - 182 285

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