Mainka at a glance
Total output 2025
> 330
€ million p.a.
Founded
1895/1949
Branches
- Lingen (head office)
- Brunsbüttel
- Gelsenkirchen
- Cologne
- Münster
- Osnabrück
- Papenburg
- Wuppertal
Mainka employees
> 750
Accident statistics
Construction projects for chemicals, energy and logistics
We plan, construct, renovate and maintain industrial buildings safely, reliably and with many years of experience. Our focus is on complex projects in sensitive industrial environments such as chemical parks, power stations, refineries, energy infrastructure and large logistics sites.
New construction of a foil factory
Construction of a New Film Production Facility
For our client Covestro, we completed the turnkey construction of a state‑of‑the‑art film production plant — including planning and full technical building equipment. The project included earthworks, concrete and reinforced‑concrete works, façade works, and full interior construction.
Particular challenges included executing the work during ongoing operations and integrating complex drainage systems. With around 18,000 m³ of excavation, 6,000 m³ of concrete, and 6,000 m² of façade surface, we delivered a production facility that meets the highest standards of precision and quality.
Figures and facts:
- Earthworks
- Sewer / pipeline construction
- Asphalt construction
- Concrete works
- Reinforced concrete works
- finishing works
- Drainage systems
- Interior works
- Work during ongoing operation
- Technical building equipment incl. planning
- Execution work
- Facade work
- Formwork and reinforcement work
- Drainage systems
- 17,500 m³ excavated earth
- 6,000 m³ of concrete
- 1,000 t of reinforcement
- 6,000 m² of formwork
- 6,000 m² facade
- 250 m pipeline construction
- 3.000 m² asphalt surfaces
| Customer | Covestro Germany AG |
|---|---|
| Location | Dormagen, Germany |
| Contract value | approx. €27 million |
| Main construction period | 23 months |
| Man hours | ca. 30.000 |
Of our more than 750 employees, around 60% are construction site personnel, whom we train regularly. On average, we devote 2% of annual working hours to training.
For whom and why?
We generate more than 90% of our turnover in the chemical, energy and specialised logistics sectors. Customers from these sectors trust in our experience because we construct complex industrial buildings reliably and safely.
