MicroConcrete Roof tiles

Early in our work we became aware of two basic problems in developing countries, the tremendous deforestation and the high incidence of imported construction materials. Thus, we began to seek solutions for roofs that would use less wood, as well as substitute imports.

Having read about investigations into handmade fiber-concrete roofing sheets, we began to experiment ourselves. Soon after the first roofs had been laid we discovered that not only was it difficult to obtain a perfect fit between the sheets, but also that they were fragile and difficult to handle. After some times cracks appeared and we realized that they were not feasible for our purposes. It was clear that the size had to be reduced and some sort of mechanical process developed in order to guarantee consistency of size and fit.

About that time, SKAT organized a seminar in Switzerland where it gathered together people from many countries who had been experimenting with hand made roofing sheets. Sofonias was prepared to tell the seminar to forget everything. Then, another participant revealed a small vibrating machine and polyethylene mould to make roofing tiles.

We bought a machine and began production!

Alfredo Martirena

Convinced that Micro Concrete Roofing (MCR) tiles were an ecologically and economically viable solution for roofs, we presented a project to the Swiss Development Cooperation. From the modest beginnings of twenty pilot plants in six countries by 1990, MCR has spread throughout Latin America so that at the end of 2002 there are about 650 workshops currently employing more than 3000 people in twelve countries. All these small businesses have raised their own financing and thus the program has been outstanding in the mobilization of capital.

Annual MCR tile production in Latin America is around 3,000,000 square meters, about 50,000 roofs. Accumulated production has resulted in some 350,000 roofs. In any event, close to two million people have elegant, enduring and economical roofs over their heads!

Throughout the past ten years the project has been able to develop a network of producers, consultants and university research institutes, and the activities have expanded to include other ecomaterials. The EcoSouth Network is the vehicle for dissemination, education, quality control and investigation. Its consultants have provided advice and introductory and follow-up courses well beyond Latin America, into Africa, Asia and the ex-Soviet Union.

Experience and engagement

EcoSouth draws upon almost two decades of experience with MCR, and its pool of international consultants not only have provided technological assistance and courses, but also have been involved in scientific investigation and in developing excellent tile-making equipment.

Read more: Experience and engagement

How good are Micro Concrete Roofing Tiles ?

We have tested MCR tiles against most leading standards for concrete tiles: ASTM (US), British Standards, South African, Russian (former Soviet standards), and even tested them for freezing resistance according to DIN (Germany). They pass all of the generic requisites like impermeability, bending strength, etc.

Read more: How good are Micro Concrete Roofing Tiles ?

MicroConcrete Roofing tiles

Early in our work we became aware of two basic problems in developing countries, the tremendous deforestation and the high incidence of imported construction materials. Thus, we began to seek solutions for roofs that would use less wood, as well as substitute imports.

Read more: MicroConcrete Roofing tiles

How to produce MCR?

It looks easy – and it is! With the right equipment and the right know how, just about anybody can produce good tiles, IF they stick to the rules and work carefully!

Read more: How to produce MCR?

Moulds for the MicroConcrete Roof tiles

Production of good quality equipment implies very high tooling costs, and production of lesser quality equipment is likely to result in many unsatisfied customers and tiles that do not live up to standard.

Read more: Moulds for the MicroConcrete Roof tiles

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Peter Arndt
German
Social worker and Mechanical technician
German, English, Spanish
Project administration and management, social organization, mechanical innovation

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Teja de MicroConcreto
MicroConcrete Roofing Tile machine
The tevi model TM5 may works with a 12V inverter or with solar panels or a car batery, by itself. A well trained, 2-people team, can produce up to 350 tiles per day
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