In 1997 Jef Damsma started his window cleaning business from home in Alkmaar. The company was soon expanded into a cleaning and window cleaning company, with North Holland as the region. After a few years, the company established itself on the De Beverkoog industrial estate in Alkmaar. In 2006 the company merged with Knijn Schoonmakers, founded in 1962, from Uitgeest. The two companies continued together under the name Knijn & Damsma Facilitaire Diensten and established themselves at the new sustainable industrial estate De Trompet in Heemskerk. The first own aerial work platform was purchased (now expanded to four own aerial work platforms) and the working area expanded further. In the years that followed, Knijn & Damsma took over a number of companies from the region.