Ronkainen Group
Sewer pipe relining for housing companies and detached-house owners, using the Bolda In-House Lining System
Highlights
- New on EvolcAdded 2026-11-02
About Ronkainen Group
Ronkainen Group Oy renovates building drainage systems by relining pipes from the inside (sukittaminen). It uses the Bolda In-House Lining System, which the company describes as a certified method, on cast iron, plastic, copper and concrete drain pipes, including rain and wastewater lines. Related services include repairs of drain pipes with leaks and pipe inspection and location.
Customers are housing companies and owners of detached houses. The company states that the work is done without demolishing structures or residents moving out, and that a detached-house sewer renovation can be completed within a week.
The company was founded in 2013 and is headquartered in Joensuu, Finland. Its website states that it has carried out sewer renovations in numerous housing companies and detached houses.
Product: Sewer pipe relining (sukittaminen) using the Bolda In-House Lining System, plus drain repair and pipe inspection and location.
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