Architectural highlights from clay

Architectural highlights from clay

Individual designwith clay

Individual design with clay Natural room climate

Wood and Claythe perfect symbiosis

Wood and Clay the perfect symbiosis

Clarity indesign with clay

Clarity in design with clay

Feeling goodwithin your four walls

Feeling good within your four walls

CLAYTEC - Your specialist for earthen building materials

With over 35 years of experience and know-how at your side

CLAYTEC from Viersen produces and sells building materials made of clay via the building materials trade. We are an owner-managed medium-sized family business. CLAYTEC originated from a craft business, core competence, basic products and application techniques result from own practice and experience. The goal of the company was and is to make the building material clay available for today's building and to integrate it into its structures.

Why clay

Better indoor climate: Optimal absorption and release of humidity.
Better climate protection: Your contribution to a better environment.
Better sound insulation: Audibly more quiet.

We help you further

Our service team will answer all your questions about your building project with clay. Personal contact persons from CLAYTEC are close to you and at your disposal.


Experience from 35 years of earth building
Technical know-how for the modern building material clay
Innovation in development of new products
Top quality
Personal advice and service

Product categories

YOSIMA and CLAYFIX are coloured, individual interior design options utilising clay. They are natural and have a deep, harmonious effect. We offer thin clay plaster, clay filling compound, and clay coatings

CLAYTEC clay plasters stand for a comfortable indoor climate. Their surfaces are natural and aesthetic. At the same time, they are modern, suitable for use with machines, and easy to work with.

Modern clay construction is light, rapid, and dry. CLAYTEC offers various systems for all requirements and every budget. In addition to the indoor climate, the sound insulation is top-notch.

Timber frame restoration is our core business. We offer solutions that are sophisticated, secure and permanent for infill, exterior plaster, and interior insulation. All backed up by 35 years of experience.

Effective energy rehabilitation is possible without destroying facades worthy of preservation. CLAYTEC's interior insulation systems offer high efficiency and certified moisture protection.

Heavy clay components not only help regulate the temperature, they also have a unique aesthetic and expressiveness of their own. Many ancient and modern clay building cultures around the world bear witness to this.

Fine surfaces worksheet

Detailed, product-independent practical information on substrate preparation, the application and surface design.


Worksheet clay plasters

Detailed and cross-product practical information on product selection, substrate preparation, manual and machine processing, plastering tools and surfaces, drying and further treatment.


Worksheet Timber frame renovation

Detailed and cross-product practical information on clay brick masonry and exterior plaster, partition repair and exterior plaster, staked ceilings.


Insulation Worksheet

The long-term safety of the internal insulation with wood fibre insulation boards is based on experience, secured building material properties and building physics calculations according to generally accepted methods.


Buy CLAYTEC products

CLAYTEC earthen building materials are high-quality and exclusive materials that you can obtain from selected dealers throughout Germany. Or contact us directly:

CLAYTEC - The family business

Peter Breidenbach - the clay visionary

The founder of CLAYTEC was one of the first to deal with clay as a building material. From humble beginnings as a craftsman in 1984, he created the market leader for clay plasters. Read here the fascinating story of Peter Breidenbach, founder of CLAYTEC and visionary of clay as a building material.