Unwa OY

We Are Professionals in Shoreline and Water Construction

Unwa Oy is a water construction contractor based in Central Finland, serving clients across the entire country. We provide water construction services both above and below the surface. Our core expertise lies in the repair and new construction of underwater concrete structures.

We offer reliable, high-quality service, and for us, it’s essential that work progresses smoothly and efficiently—without ever compromising on safety.

Learn more about the company

Bridge Repair Work at Suopuro and Niemenjoki

In 2024, we worked as the diving contractor for Oteran Oy on the repair projects of the Suopuro and Niemenjoki bridges. Our tasks included underwater drilling, injection work, reinforcement, and formwork construction. In both locations, the concrete formwork was built...

Underwater Concrete Repairs at Merikoski Hydropower Plant’s Tailrace Channel

We are working as a subcontractor for Ramago Oy at the Merikoski hydropower plant. Our responsibilities include all underwater construction and inspection work related to the retaining wall in the tailrace channel. This year, diving operations began on May 1st, 2024....