The company has its origins in 1918, with the first plastic pipes manufactured in 1965.
Over the following decades the company has grown through innovation and investment in new products and markets, along with strategic acquisitions and development, to become a leading supplier of plumbing, indoor climate and infrastructure solutions around the globe.
Johan de la Gardie establishes Wirsbo Bruks AB.
Aukusti Asko-Avonius establishes a carpentry workshop in Lahti, Finland.
Arvi Tammivuori, son of Asko-Avonius, establishes Upo Oy and begins to manufacture cast iron products and household appliances.
The first plastic factory, Upo-Muovi, starts up in Nastola, Finland, and launches its first plastic pipes.
In Sweden, Wirsbo was the world's first company to start manufacturing PEX pipes.
Asko and Neste found Oy Uponor Ab.
Uponor enters plastic hot water pipe business by acquiring the German company Hewing and the Swedish company Wirsbo Asko Oy is listed on the Helsinki Stock Exchange.
Wirsbo opens a factory in Apple Valley, Minnesota, USA.
Acquisition of 40% of the German company, Unicor GmbH, ownership raised to 100% by 1999.
Uponor merges with parent company Asko Oyj – renamed Uponor Oyj on 31 December 1999.
One brand and "One Unified Uponor".
Municipal business outside of the Nordic countries divested Extension of offering into cooling Entry into project business organically and through acquisitions Uponor Infra established through a merger with KWH Pipe 1 July 2013.
Uponor and Belkin International establilsh a company called Phyn.
In celebration of 90 years in business, Uponor published in September 2008 a book conveying its story from 1918 to 2008.