TETRiS eco-friendly beam and block structural flooring

TETRiS : eco-friendly, insulated beam and block structural flooring alternative

TETRiS is the eco-friendly, super strong structural flooring alternative to beam and block floors. The revolutionary system is designed to provide outstanding thermal and structural performance. The insulation blocks sit on and between standard pre-stressed concrete floor beams and is finished with a structural concrete topping.

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TETRiS Block and beam simple ordering process

  1. Customer or architect e-mails ground floor/foundation layout(s) and U-value requirement(s) to Cellecta’s TETRiS Technical Department (TTD) – tetris@cellecta.co.uk
  2. TTD produces a beam and TETRiS layout tailored to the floor’s design and performance requirements.
  3. TTD issue an email quotation detailing components included in the price (TETRiS blocks, pre-stressed concrete beams, concrete slip and closure blocks) along with the U-values achieved using different TETRiS block thickness’.
  4. If acceptable, the customer emails back order confirmation together with specific delivery information. TTD issues payment instruction by return.
  5. A mutually convenient delivery date for the components is agreed and confirmed by email.
  6. TETRiS blocks are delivered in palletised plot specific lots, together with any required slip and closer blocks and a colour coded layout drawing.
  7. Beams are delivered on a flat bed lorry
  8. Contractor installs floor in accordance with issued layout plan and Cellecta’s fitting instructions.

Eco-friendly beam and block alternative

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Why use TETRiS?

Replacing concrete blocks with TETRiS insulation blocks in a suspended ground floor construction will speed up the build process and dramatically increase the structures thermal insulation efficiency, with U-values as low as 0.11 W/m2K achievable.


TETRiS has been awarded the highest possible code for sustainable homes construction rating of A+ = 3 Code credits (Element No. 820140051).

 TETRiS Concrete Beam Partners

Cellecta has established a nationwide network of respected pre-stressed concrete beam manufacturers who can both design and supply floors to incorporate TETRiS insulation blocks.

Compared with traditional concrete infill blocks, incorporating TETRiS blocks into the design dramatically reduces the static load imposed on the concrete beams, thus reducing the overall quanitiy of beams required and increasing the span bridged.

Please contact out TETRiS Manager on 01634 296 677 for more information

Site Pictures


Key Benefits of TETRiS over beam and block

  • High thermal performance:  U-values as low as 0.10 W/m2K achievable
  • A+ Green Guide rated system
  • Quicker and easier to install
  • Produces a floor with zero cold bridges
  • CSH Pol 1 compliant TETRiS ECO option available
  • 100% Recyclable

Useful Resources

For more information on TETRiS and to get a price for your project contact Cellecta today on 01634 296 677.


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