Roof tiles

ZZ Wancor

Whether it were the Corinthians or the ancient Romans who first used tiles to protect temples, houses and porches from rain and sun is no longer certain. Though, these clay roof tiles have become an indispensable part of architectural landscape of Europe. As a regional product, they come in a variety of colors and strengths, depending on the raw materials they are made from. In modern brickworks, the tiles are dried in large ovens and then fired at high temperatures, with an energy demand that is highly dependent on the mass to be heated.

Conserving resources by saving material

ZZ Wancor AG, the largest Swiss clay roof tile manufacturers and a subsidiary of Wienerberger, the world’s leading brick manufacturer, worked with QUO to develop two tiles that reduced the amount of material used by up to 13% without any loss of strength or increase in stack height. QUO used the method of finite elements (FEM) to optimize the undersides of the tiles for the conventional load.

Reduction of energy costs in the process

The optimization not only led to a reduced demand for raw materials, but also to significant energy savings and associated cost reductions in production. In addition, the lower brick weight allows for more efficient roofing. The project has resulted in general design guidelines that are being used to optimize a large part of ZZ Wancor’s tile production.


Tile weight reduced
Less raw materials needed
Less energy consumed


Analysis of load cases and thresholds
FEM-based optimization of the tile geometry
Transfer to mold manufacturer
Evaluation and analysis of new tiles

Core Team

2 Employees