We stand for inventiveness. That's why we dedicated ourselves to preserving the quality of life in cities 40 years ago. Now we have developed something very special - a surface system that unseals surfaces and preserves the natural water cycle.

The GODELMANN climate stone is our statement for the sponge city principle.

The GDM.KLIMASTEIN

With the GDM.KLIMASTEIN, we have created a world first that can make a significant contribution to improving the urban climate: The first paving stone with a three-layer structure protects the groundwater through proven pollutant retention and achieves an evaporation rate comparable to that of a meadow.

GDM.KLIMASTEIN is the fifth generation of infiltration-capable surface coverings.

1st generation: geoSTON | Single-layer paving stone with porous structure. Rainwater can seep away completely.

2nd generation: drainSTON | Paving block with two-layer filter joint and lateral channel system.

3rd generation: geoSTON with first abZ | construction type receives building authority approval (abZ) from the DIBt. Proof of suitability for covering consisting of paving stone, bedding and jointing material.

4th generation: gd- and hp-protect with abZ | Moisture is stored in the porous core and then evaporates via the joints. Structure-tight attachment allows free color and surface design.

Too hot. Too dry. Too sealed.

The city is under stress: extreme heat waves and heavy rainfall events are, or will soon be, the new normal, with devastating effects on urban life, our health, our infrastructure and our economy. In order to mitigate the consequences of climate change, new development concepts for urban areas need to be developed. Green, blue and gray infrastructure, i.e. plants, water and buildings, together form small ecosystems that need to be changed for the better.

The climate stone designs climate-active urban surfaces

Three layers for a better climate.

Catalyst layer: The visible surface reflects heat radiation, reduces noise emissions and neutralizes air pollutants. Moisture passes through the joints into the storage layer and into the ground.
Storage layer: The core area can absorb and release large amounts of moisture. In this way, paved surfaces achieve a similarly high evaporation rate as a meadow.
Capillary layer: The bottom layer is less permeable, more moisture is stored and also absorbed by the soil. This leads to increased evaporation.

innovation medal green awards federal ecodesign prize

References with the GDM.KLIMASTEIN

Open schoolyard surrounded by green meadows, trees and seating elements. A path consisting of anthracite-colored concrete blocks runs from right to left through the paved courtyard to a modern, multi-part school building. The front part stands on concrete columns and is clad in dark gray. The rear part has a white façade.

The schoolyard is surrounded by green meadows, trees and seating elements where children can chat with each other. A modern, multi-part school building can be seen in the background. The front part stands on concrete pillars and is clad in dark gray. The rear part has a white façade.

Schools and educational institutions

Fritz Ulrich School, Heilbronn

Following extensive renovation, the southern schoolyard of the Fritz Ulrich School in Heilbronn is now a modern, open and climate-resilient town center with seating and green areas. The particularly urban climate-friendly GDM.KLIMASTEIN was used here.

More about the Fritz Ulrich School in Heilbronn

Open square in an urban environment. A water feature with fountain elements is placed in the middle of the paved square, surrounded by flowerbeds and trees. A modern town hall can be seen in the background, surrounded by the square.

Squares and promenades

Partnership square, Jettingen

In front of the Jettingen town hall, a barrier-free, modern, open town center with seating and water elements has been created. The particularly urban climate-friendly GDM.KLIMASTEIN was used here.

Partnership square, Jettingen