Historic steel and iron constructions

Rivetted steel constructions

Drawing on our extensive experience with historic steel structures, we have designed and built multiple specialized riveting machines and have a proven track record in repairing and fabricating intricate riveted connections. Our projects range from restoring ancient frames to updating mid-century joins, always with attention to structural integrity and historical accuracy. Our capabilities span hydraulic, pneumatic, and hand-hammered riveting, allowing precise, durable solutions for aging frameworks.

Repair welding

We excel at interpreting steel constructions and assessments of their material qualities to shape effective repair strategies.

We have conducted a comprehensive research project on structurally sound welding of historical steel. Our team performs accessible, hands-on analyses in-house to determine the best repair approaches for each project.

Cast iron

We specialize in the conservation and repair of cast iron construction and decorative elements—both mechanically and metallurgically. Our broad expertise covers the restoration and (re-)production of new cast iron pieces, ensuring authenticity and lasting strength and quality.

Steel windows and doors

A growing challenge in heritage work is preserving steel window frames and doors from 19th and 20th-century buildings. Our restoration approach considers not only the original materials but also the broader system: relative humidity, ventilation, isolation needs, and other environmental factors. We combine technical rigor with a holistic mindset to deliver authentic, durable restorations.