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Persolit’s history

Five generations of technical insulation

Persolit is a family-owned company with more than 80 years of experience in technical insulation and energy optimization. Our experience, decency and
credibility has made us one of Denmark’s leading suppliers of technical insulation to industrial companies, power plants and construction.


In 1938, Carl Pers founded Persolit Entreprenørfirma A/S based on licencing rights to an English insulation method. His son, Poul Pers, who spent his young days in America, returned home with some asphalt products that proved to be excellent for moisture insulation. For a number of years, Poul Pers ran his own company, which mainly carried out moisture insulation for the Danish train-operating company DSB. For example, he carried out insulation of the bridge deck on the old Little Belt Bridge.

In the 1960s, engineer Max Pers, son of Poul Pers, joined the company as the third generation. After this, Persolit moved further into versatile, technical insulation. Among other things, they insulated exhaust pipes at B&W’s engine factory in Christianshavn, where Persolit’s head office was also located.


Insulation tasks at the Lindø shipyard for customers such as Maersk kept increasing, so in 1971 the department in Odense was moved to Munkebo. In the 1970s, production also began at Smedeløkken in Munkebo.

In 1983, Persolit’s offshore department opened in Esbjerg.


In 1992, Persolit expanded with a new head office and administration at Lindøalléen in Munkebo, where the sewing workshop is located too. The sheet workshop is still located in Smedeløkken, from where we supply all the company’s departments with all kinds of sheet metal productions today.

1996 was the year in which the insulation industry in Denmark changed significantly. The insulation company Perfect joined Persolit Entreprenørfirma to become one company. Where Persolit used to be strong primarily within the maritime industry, it had now also entered the land-based industry, with the insulation of industrial plants becoming a significant part of the business, among other things.

In the 1990s, Persolit began carrying out facade contracts, with the Herstall building in 1997 as one of the first projects.

In 1998, the subsidiary Persolita UAB was established in Klaipeda, Lithuania. The deckhouses for Maersk’s ships were built and insulated in Klaipeda, and this laid the foundation for the start-up of the subsidiary.


Sven Pers, son of Max Pers and the fourth generation of Persolit, grew up with insulation and completed his apprenticeship in 2000. He has more than 40 years of experience in the industry, and today, Svend is the owner and working chairman of the board of Persolit.  

In 2000, Persolit took over Danish Industrial Insulation, which ensured the Copenhagen department growth and strength primarily within technical insulation in the power plant segment.

In the 2000s, many facade jobs began to turn up in the order book. There was also room for cladding projects which were not facades, such as the copper staircase at the University of Southern Denmark.

On 1 January 2008, the sister company Danpro Steel Construction A/S started activities within steel structures. The company is located with Persolit’s department in Fredericia.

2012 and onwards

In 2012, Persolit took over SYD Stilladser in Aabenraa, establishing a new leg, Persolit Stilladsfirma A/S. Today, the scaffolding company carries out most activities from the department in Fredericia. The company offers nationwide service in all types of scaffolding.

To strengthen its HVAC activities, Persolit took over shares in BL Isolering in 2012.

On 1 July 2013, Persolit took over the SN Group in Herlev.

In the spring of 2014, Persolit was certified within OHSAS18001 (working environment) and ISO9001 (quality).

On 19 July 2015, Persolit took over Proisolering in Skødstrup near Aarhus.

Today, the fifth generation of the Pers family works in the Copenhagen department as Danni Pers is employed as a section manager within HVAC.