Raising €6M Seed

Industrializing Wall Manufacturing at a Global Scale.

A deep tech innovation transitioning exterior wall production from construction sites to fully automated Dark Factories.

Why Construction Automation Fails

Construction remains labor-intensive, and the sector is littered with bankruptcies because incremental improvements are simply not enough. Current insulation methods are 30-60% less effective than designed, leading to a massive 3,600 TWh energy shortfall globally.

The root cause: legacy wall structures are designed for people, not machines. Automating complexity is inefficient, leading to quality inconsistencies, material waste, and poor margins. A true transition requires redesigning both the product and the manufacturing process from the ground up.

The Dark Factory & MOS

Our Manufacturing Operating System (MOS) integrates automated design, local building codes, robotic manufacturing, and client ERP interfaces.

36s
Production speed per 1 m² of finished wall
80%
Reduction in manual labor

Designed for Robotics

Our patented Light Steel Frame (LSF) system is assembled fully autonomously, applying LEAN principles from the automotive and shipbuilding industries.

Simple

The structure is engineered strictly for industrial robotics. One-layer insulation is installed alongside the steel frame in a single process step, eliminating complexities and bottlenecks.

Sustainable

Eliminates thermal bridges, reducing building energy consumption by up to 60%. The system enables up to a 90% lower carbon footprint compared to traditional methods.

Safe

100% inorganic structure is immune to mold and pests. Structural adhesive joints are fully protected from environmental stress (UV, moisture), ensuring lifecycle safety validated by independent experts.

Business & Scaling Model

Our business is based on an asset-light technology licensing and a Factory-within-Factory (FwF) model. We scale by partnering with existing industrial players, substituting construction economics with manufacturing economics.

Technology Licensing

Licensing the wall system and factory concept to existing modular and prefab manufacturers.

Material Sales

Recurring revenue through the sale of key system materials optimized for our robotics.

MOS SaaS Fees

Recurring software fees for our proprietary Manufacturing Operating System tools.

Traction & Validation

TRL 6–7
22 Patents globally
20+ PoC projects

Strategic Letters of Support

Sika

Strategic cooperation in providing advanced adhesive technologies essential for the automated production and long-term durability of our prefabricated wall elements.

voestalpine

Strategic partnership for the industrial-scale supply of high-quality light steel framing, ensuring precision and reliability for automated manufacturing.

The Founders

Cross-disciplinary expertise in building physics, materials science, industrial manufacturing, and digitalization required to execute this transition.

Jarmo Kinnunen

Jarmo Kinnunen

CEO

Over 35 years of experience in the construction business, project management, and organizational development.

Jorma Kinnunen

Jorma Kinnunen

CTO

30 years of experience in global LSF business and product development. Extensive materials science expertise.

Jesse Kinnunen

Jesse Kinnunen

CDO

BIM specialist with an extensive background in digital construction solutions, software, and robotic manufacturing.

Factory Line

Join the Seed Round

SteelLeanel addresses a €125 billion market productivity crisis.
We are currently raising a €6M Seed round to transition from validation to global commercialization.