Knauf is an international, family-owned company based in Iphofen

Iphofen

Iphofen is a town in the district of Kitzingen, in Bavaria, Germany. It is situated 9 km southeast of Kitzingen along the Bundesstrasse 8....

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 well known for drywall gypsum

Gypsum

Gypsum is a very soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is found in alabaster, a decorative stone used in Ancient Egypt. It is the second softest mineral on the Mohs Hardness Scale...

 boards, originally founded in 1932. The company is a producer of building materials and construction systems comprising construction materials for drywall

Drywall

Drywall, also known as plasterboard, wallboard or gypsum board is a panel made of gypsum plaster pressed between two thick sheets of paper...

 construction, plasterboard, cement boards, mineral fibre acoustic boards, dry mortars with gypsum for internal plaster and cement-based external plaster and insulating materials; glass wool

Glass wool

Glass wool or fiberglass insulation is an insulating material made from fiberglass, arranged into a texture similar to wool. Glass wool is produced in rolls or in slabs, with different thermal and mechanical properties....

, stone wool and other insulation materials under the company Knauf Insulation

Knauf Insulation

Knauf Insulation is an international company owned by the Knauf family and is an important manufacturer of insulation products in the US and Europe. The company is a producer of insulation materials such as glass wool, stone wool, wood wool boards, EPS, XPS, as well as the Heradesign wood wool...

.

It has more than 150 production sites worldwide. It is one of the seven producers which hold approximately 81% of
the worldwide wallboard market (Georgia Pacific, Knauf,
Lafarge

Lafarge

Lafarge is a French industrial company specialising in four major products: cement, construction aggregates, concrete and gypsum wallboard. In 2010 the company was the world's second-largest cement manufacturer by mass shipped behind Holcim.-History:...

, National Gypsum Company

National Gypsum Company

National Gypsum Company is a company based in Charlotte, NC, well known for drywall gypsum boards in the US. It has 21 gypsum board plants in the US and is presenting itself as a fully integrated building products manufacturer. It is a private company, incorporated as New NGC, Inc. in 1993...

, Saint-Gobain

Saint-Gobain

Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris and headquartered on the outskirts of Paris at La Défense and in Courbevoie. Originally a mirror manufacturer, it now also produces a variety of construction and high-performance materials.The company has its head...

, U.S. Gypsum and Yoshino Gypsum Co., Ltd).