HELUZ FAMILY 30 2in1 grinded

Product category: Clay blocks for Siding and Inner Walls / HELUZ FAMILY 2in1
Dimensions (LxWxH): 247 x 300 x 249 mm
Weight: 12.5 Kg
Class of compression strength: 10 MPa
Heat diffusion coefficient U: 0.23 W/m2K
Thermal resistance R: 4.26 m2K/W
Airborne sound insulation: 42 dB
Comsumption of bricks per m2: 16
Comsumption of bricks per m3: 53.3
Number of pieces per pallet: 96

The heat diffusion coefficient values “U” are given with plasters for the production plant in Hevlín at the strength 8 MPa or 10 MPa and thermal insulation mortar or mortar for full-area thin joint Heluz with ground bricks, if not mentioned otherwise.
More information about the product can be found in the current Pricelist or the Product Catalogue.


For single-layer perimeter walls of zero-energy, passive, low-energy and energy-efficient buildings.

FAMILY 2in1 ground clay blocks have the best thermal insulation properties on the market in comparison with other materials for single-layer masonry. Filling the cavities of these clay blocks with polystyrene increased their thermal insulation properties by 40% while maintaining their water vapour permeability. The FAMILY 2in1 clay blocks in widths of 440 mm and 500 mm meet the recommended values for passive houses without additional insulation.


  • best thermal insulation characteristics of the market, the heat transfer coefficient U up to 0.11 W/m2K
  • it can replace up to 36 cm of thermal insulation
  • with its thermal insulation properties it can replace a solid clay blocks wall up to 7 m thick
  • integrated insulation protected by ceramic
  • a comprehensive system solution for the building envelope in a single-layer structure
  • they meet the recommended values for passive and zero-energy houses with reserve
  • solid, safe structure
  • natural water vapour permeation - the brickwork breathes

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