Kernstück GmbH

We offer comprehensive consulting and practical support in the areas of restoration, monument preservation, and new construction and renovation.

Now new in Switzerland:

We distribute and process the exclusive lime mortars from Calchera San Giorgio.

These high-quality materials are ideal for the sensitive handling of historic buildings as well as for new buildings and renovations in the private and public sectors. Our main focus is on durability, healthy living, and sustainability.

Whether indoors or outdoors, our products are versatile. They have been tried and tested in practice and meet all current standards. They are completely free of cement, gypsum, soluble salts, and plastics.

The positive properties of pozzolanic lime mortars, based on ancient recipes, are remarkable: they allow water vapor diffusion similar to clay plaster or other natural lime mortars, but offer significantly higher hardness and durability. In addition, they have an active effect on the indoor air—they are antistatic, purify the air, and have mold-resistant properties due to their high pH value.

Avoid annoying consequential damage that conventional "modern" building materials can cause over the years! These products consume valuable resources, burden both the environment and your budget, and offer no added value for your health.

Enjoy the positive properties of our materials — from day one! The timeless beauty of the surfaces remains intact even after many years and always retains its aesthetic appeal.

Make your project a lasting success with ancient knowledge!