Are we going to build houses with reusable building-blocks?

How can we earn money on trash and by producing fewer new products? In the podcast series Industriens Genbrugsguld (Danish speak) MADE visits Danish front runners who have thrown themselves into making circular productions. One of them is REXCON that has an idea how to reuse building materials again, and again and again.

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A collapsible block that can be transported flat-packed, be built into a wall, be torn down and reused elsewhere. The startup REXCON has it as their goal to reduce the CO2-footprint of the building sector, and they are already on their way with the invention of the building module ReBLOCK, which can be part of our future houses.

”You can surely recognize the transport of building-elements on the highroads. One truck transporting one wall. And then you can start counting trucks to get a whole house. Using ReBLOCKs, I can transport several houses to the building site on just one load,” founder and owner of REXCON System Jesper Sørensen explains in the second episode of the MADE Podcast series Industriens Genbrugsguld (Danish Speak).

”I can transport several houses to the building site on just one load,”

Jesper Sørensen, Owner and founder of REXCON System
How to use a ReBLOCK

Industriens Genbrugsguld

In the podcast series ‘Industriens Genbrugsguld’, experts tell about the latest knowledge on circular and sustainable production – and how we get there. In addition, MADE Podcast visits various Danish productions to hear about their answers to how a production can become circular and sustainable.


C-VoUCHER is a EU Horizon 2020 project and is an abbreviation for Circularize ValUe CHains across European Regional Innovation Strategies.

The aim of the project is to help SMEs in Europe to develop supply chains based on circular economy.

12 selected SMEs have developed and tested new circular solutions. These solutions are to be spread to 42 other SMEs with similar wishes to introduce circular economy. You can read more and apply for the replication program here (deadline 31/10-2020).

MADE, The Municipality of Vejle, Green Ship of the Future and Lifestyle & Design Cluster are Danish partners .

The project runs until March 1, 2021.

Old building-modules are to be reused

Apart from minimizing the transport, REXCON aims to make ReBLOCKs circular using a take-back system. Or in other words, REXCON aims for a return system for used ReBLOCKs instead of these ending up as garbage.

In the podcast, REXCON explains how they work towards developing this system for returns together with experts from the EU-project named C-VoUCHER, of which MADE is a partner. The project supports european SMVs in developing cirkular business models through expert- and financial support.

A system for returns – then what?

Apart from getting the return system up and running, there are also challenges waiting ahead when the product is returned:

”Are there some items which can be used right away, will some just have to be cleaned, are some of them actually dangerous because they have been used in an incorrect manner?,” Professor at DTU Tim McAloone says in the podcast and continues:

”Which destiny is the product to have in its next life? This decision-making process only exist in very few companies that I know of.”

Industriens Genbrugsguld

Tim McAloone is among several experts, in the first episode of the series Industriens Genbrugsguld, explaining the challenges and possibilities that lie within circular ecnomy. In the series MADE Podcast zooms in on circular economy and sustainability in Danish production together with experts and companies working with the very same.

In the next episode of the series MADE Podcast visits the company Thürmer Tools that is working with 3D-printing tools using metal from old products.


  • Tim McAloone, Professor at the Technical University of Denmark (DTU).
  • Jesper Sørensen, owner and founder of REXCON
  • Julie Lykke-Nedergaard, host


  • Jingle soundtrack: “Princess” by Ramzoid
  • Background music: “Hope” by Morten Peetz Andersen

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