Köster GmbH

More than 35 years of experience

Founded in 1982 KÖSTER BAUCHEMIE AG specializes in the development and production of high quality waterproofing products and systems. Today, KÖSTER forms a group of more than 20 companies with worldwide activities in more than 50 countries. Its headquarters are located in Aurich, Germany

Waterproofing from basement to roof

As waterproofing specialists, our products protect and preserve buildings and structures world-wide. Whether the project at hand is the restoration of a heritage building, waterproofing of a new construction, or the repair of a failed waterproofing, you can be assured: KÖSTER´s comprehensive and broad product program offers the optimal solution.

In order to always be one step ahead, we continually develop new products. Our current product range comprises of bituminous basement waterproofing for the positive side, crystallizing sealing slurries for the negative side, waterproofing for tanks and tunnels, restoration plasters, horizontal barriers (damp barriers), anti-mold systems, crack injection and crack repair systems, concrete repair and protection products, concrete and mortar additives, cementitious underlayments, floor coatings, moisture control systems, joint sealants, bathroom waterproofing, facade impregnation, as well as TPO and ECB roofing membranes.

The Olympic hall in Beijing, the Empire State Building in New York, the airport in Munich, the Royal Palace in Copenhagen, the Nuclear Power Plant in Sofia, the Bombay Stock Exchange, the Panamá Canal and many other well-known objects around the world have all been waterproofed using our systems and materials.

Never compromise on quality

Waterproofing is an area where good quality materials and application can not only make the difference, they can save you time and money. It is our policy to offer materials of highest quality, durability and general performance. We never compromise on quality and believe in developing strong and lasting relationships with our customers. We apply this commitment to all levels of our service, from research & development, through production to our sales department.This is proven by our DIN EN ISO 9001:2008 certified QM-System.

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Contact Information


Contact Email

+ 233 544362736

Contact Phone



Sutthauser Str. 280

Osnabrück, DE