Collection: Natural stone graywacke slabs

The properties and versatile use of Graywacke

Graywacke is a robust natural stone that is suitable for both outdoor and indoor use. Due to its extremely stable properties, it is resistant to weather and sun, safe from frost damage, and easy to maintain. In natural gray, red rust, and earthy brown hues, it is a real eye-catcher. Its split-rough surface and polished edges give each slab a unique pattern and grain. Each Graywacke slab is therefore a unique piece.

Not only the Bergisches Land is the home and origin of the broken stones made of Graywacke. This sedimentary rock appears very elegant and understated due to its subtle color range from brown-gray to greenish, promising a great look indoors and outdoors.

Naturstein Grauwacke Platten

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Grauwacke Mauerstein und als Teichumrandung bei

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"We are very happy with the new look of our outdoor area, which looks very elegant thanks to the anthracite surface of the graywacke slabs. Everything worked perfectly from ordering to delivery."

Lena M., Düren

Fassadenverkleidung mit Grauwacke Platten aus Natursteinen bei

Greywacke as facade cladding

The Grauwacke is a commonly used facade cladding stone. It belongs to the family of sedimentary rocks, which are widespread in many countries and consist of quartz, feldspar, mica, and other minerals. Grauwacke is known as a very hard rock that offers good resistance to moisture. It has a high resistance to temperature extremes such as heat and cold. The use of Grauwacke as facade cladding offers many advantages. Firstly, Grauwacke is an adaptable material that can be used in both traditional and more modern architecture. Grauwacke is durable, with a long lifespan. The natural stone is also visually appealing as it exhibits a variety of color nuances depending on the lighting.

The application of Grauwacke as facade cladding is relatively simple. First, the facade surface must be cleaned and cleared of any excess material. Then, the individual stones are attached to the facade using a special mortar mix. Finally, a protective layer (impregnation) can be applied to protect the facade from harmful weather conditions.

  • Grauwacke Stein natürliche Struktur, Farben von grau-schwarz, bis grün und braun


    Greywackes can be distinguished into quartz wackes (dominant quartz content), feldspar wackes (quartz, feldspar, and small amounts of rock fragments), and lithic wackes with a high proportion of rock fragments.

    In addition to the natural structures, optical differences are provided by the appealing colors, ranging from gray-black to green and brown.

  • Grauwacke Naturstein als Polygonalplatten für Gartenweg


    Grauwacke from the Bergisches Land is generally suitable for all applications, but is particularly popular as material for patio slabs, natural stone walls, classic paving stones, wall claddings, pond edgings, and as stone for garden paths or even for palisades.

    In the garden, this natural stone is becoming increasingly popular and is particularly used in pond design or as a garden path.

  • frostsichere Grauwacke Mauersteine und als Stein für Wandverkleidung


    Grauwacke is a sedimentary rock that impresses with its abrasion resistance on the surface, its frost resistance, and its good technical capabilities.

    In addition to its noble appearance, the slabs are very slip-resistant, easy to care for, and weather-resistant.

    Grauwacke can be split remarkably well and is often used as a terrace slab, layer wall, or classic paving stone.

Polygonalplatten im Garten - Grauwacke Steine kaufen bei

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"Since last summer, our garden has been adorned with a natural stone wall made of graywacke, which fits perfectly into our garden in the Bergisches Land with its rustic-looking stones. In line with the natural stone wall, we have also had the path leading to the entrance of the house designed with graywacke."

Jonas K., Landshut

COMPRESA - Premium quality. Everything included at an affordable package price. Free delivery to your doorstep.

Choose your desired color for the joint and the desired impregnation (Nature Effect or color intensifying). All necessary materials such as Polygonal slabs including 10% extra, Binder, Quartz gravel, Colorquartz, and impregnation are already included in this all-inclusive package.

Grauwacke Steine kaufen als Sockelverkleidung an der Hausfassade

Base claddings with greywacke

Grauwacke is a popular stone that is used for many different purposes. It is a hard and durable stone that is suitable for many different design styles. Grauwacke is a natural stone and therefore shows its variety of colors and textures from stone to stone. For almost every taste and environment, Grauwacke provides a perfect, natural, and harmonious look. In comparison to other stones such as granite and marble, Grauwacke is also the more cost-effective option. Base claddings made of Grauwacke are durable and can give a house a luxurious appearance. The installation is uncomplicated and due to its robustness, hardly any maintenance work is necessary. In other words, you can enjoy peace of mind for many years.

The advantages of using graywacke for cladding bases are:

  1. durable, robust broken stones
  2. cost-effective compared to granite, marble
  3. wide range of colors, diverse textures
  4. easy, quick installation
  5. easy to maintain, minimal maintenance required
  6. luxurious natural look
Robuster Naturstein Grauwacke als Trittplatten im Garten und als Terrassenplatten

A highly robust natural stone - as floor tiles for the terrace

Polygonal Grauwacke floor slabs are an attractive and impressive design element for gardens and outdoor areas. Whether as large stepping stones, as pool cladding, for the driveway, the pathway, the terrace covering, as pond boundary or even for a luxurious outdoor shower - the possible uses are practically unlimited. The Premium floor slabs from are made of high-quality, selected dense rock. They are durable and easy to maintain, making them ideal for outdoor use. Thanks to their versatile applications, they are suitable for any garden style.

Our Grauwacke floor slabs are available in thicknesses between 6 cm and 15 cm and have a diameter of 80 to 140 cm. They are excellent as flooring.

Our recommendation for calculating the quantity

To be on the safe side when laying the polygonal slabs, we recommend adding approximately 10% to the determined area to be covered. This means that if your planned terrace has a surface area of about 13 m², we recommend ordering 15 m². Since natural products are always uneven and variable in their color and structure, there will be an individual selection based on personal taste when laying them. In this way, some slabs may naturally fit better than others. In other words, you may want to be able to occasionally sort out a slab.

FAQ - Answers to frequently asked questions about graywacke natural stones

What is greywacke stone?

Greywacke is a very hard and dense rock consisting of limestone and quartz sandstone. It is a very common component of mountain complexes and is usually found in the form of pebbles and slate. It also contains minerals such as mica, feldspar, and quartz. It is commonly used as a building material and can be found in various colors such as gray, green, red, and brown.

Where is greywacke preferably used?

Natural stone is often used outdoors, especially as paving, terrace flooring, steps, edging, and other architectural elements. It is also used as a building material for garden elements, ponds and fountains, and as facade material. Greywacke rubble stone is also a popular material for sculptures and artworks.

How are greywackes cleaned and maintained?

Greywacke can be cleaned with a damp cloth and a little warm water. It is important not to use harsh cleaning agents or abrasives, as these can damage the surface of the stone. For regular maintenance, you can use a special stone oil, for example, to protect and seal the surface of the stone.

Where is greywacke mined?

Grauwacke is mainly mined in Europe, Australia, New Zealand, South Africa, China, India, and the USA. It is mainly extracted in quarries, nearly flat plains, or in hills and mountains, but can also be mined in rivers and lakes. We at source our premium Grauwacke stones from Germany and various parts of Europe.

How are the natural stone slabs placed on the terrace?

The natural stone slabs are usually laid on a gravel layer on the terrace. For this purpose, the gravel layer is grouted with a layer of concrete mortar and the natural stone slabs are set in the concrete mortar. However, this cementitious laying method has quality deficiencies. This can lead, among other things, to the so-called cement efflorescence, cracks, and concrete parts breaking out. This is unsightly and needs constant repair. That's why at, we use the long-term solution of quartz gravel and resin. Subsequently, the slabs are grouted with a jointing compound (Colored jointing mortar) and the surface is cleaned and impregnated.

How much does greywacke cost?

The price of greywacke depends on various factors, such as whether it is a greywacke facade stone, which is significantly thinner than a greywacke floor slab. But ultimately, it also depends on the quantity ordered. Delivery is always included at You can find the current conditions by clicking on this link - More information about greywacke.

What does greywacke weigh?

The density of graywacke can vary depending on the location and rock layer. The weight is directly related to the density and generally ranges between 2.6 g/cm³ and 3.2 g/cm³ or between 2.5 to 3.5 tons per cubic meter.

Where does greywacke come from?

Greywacke is a sedimentary rock that has developed through wind, water, and volcanoes. It mainly consists of quartz, feldspar, mica, and other minerals. Greywacke, also known as Silesian slate, is a product of the deposition of materials formed by mechanical influences, erosion, and weathering. Some of the oldest greywackes formed more than 2.5 billion years ago.