Woller Oy

Steel con­struction specialist

in the Nordic coun­tries and Germany

We are your partner even in demanding steel projects

Woller Oy is a company founded in 2019 whose special expertise is the install­ation of special doors, hatches, windows and exteriors in Finland and overseas. We have solid exper­ience in leading various and exacting steel con­struction works both in Finland and around the world, for example from the OL3 NPP nuclear power plant project, Ringhals and Forsmark in Sweden.

We put into practice your metal needs from design to implementation

Our strong expertise enables the imple­ment­ation of steel assem­blies even for demanding pro­jects. Our work description also includes, take care of project entities, from design to install­ation.
It is also pos­sible to order smaller units from us, according to the wishes and needs of you.
Our company is ded­icated to work according to high safety standards and con­sid­ering all safety risks.
We have at our dis­posal an extensive sub­con­tractor / cooper­ation company network in Finland and around the world.
We con­stantly train our staff in various special skills and invest in safety and its development.

Examples of our ser­vices and know-how 

  • HPEM pro­tection
  • High quality doors and gates for nuclear power plants, power plants and other projects
  • Design and install­ation of struc­tural fire protection
  • Fire pro­tection, physical pro­tection, radi­ation pro­tection and air­craft col­lision pro­tection for high-level safety struc­tures, such as nuclear power plants
  • Install­ation of facades according to cus­tomer wishes and needs

In cooper­ation with Sommer GmbH

We work very closely with the German company SOMMER FAS­SADENSYSTEME-STAHBLAU-SICH­ERHEIT-TECHNIK GmbH & Co KG. We are their cer­tified sup­plier and main­tainer of their products in Finland, the Baltic coun­tries and other Nordic countries.

    Sommer GmbH

In Finland, we have partners such as ProDoor, Vasmet Oy.

We have been granted ISO 9001: 2015, ISO 14001: 2015 and ISO 3834-2: 2005 cer­ti­ficates 2021.


We are Reliable Partner

Woller Oy is a member of Reliable Partner in the Vastuu Group – program.

Luotettava Kumppani


We have strong years of exper­ience and expertise in our field. Contact us and we will discuss more about your project needs and wishes.

Contact persons in Finland:

Vladimir Mostka

Site Manager / QHSE Supervisor 

Jelena Kurikka

Admin­is­trative Assistant


Lep­päkaari 2
86100 Pyhäjoki