Public buildings are rarely forgiving commissions. A school entrance, municipal façade or access-control system must withstand heavy use, satisfy demanding regulations and remain maintainable long after the project team has moved on. For FMD, this is not a specialist corner of the construction market. It has been the company’s working environment for more than half a century.

Founded in 1974 in Vitry-sur-Seine, FMD designs, manufactures and installs aluminium joinery, metalwork, locks and building-closure systems across Paris and the wider Île-de-France region. Its work spans windows and doors, façades, gates, shutters, industrial closures, access control and automation, with public-sector projects forming an important part of its activity.

What distinguishes the company is not simply the range of products it can provide, but the continuity of responsibility behind them. Design, fabrication, site coordination, installation, maintenance and smaller repair works can all be managed within the same organisation. In a market often divided between consultants, manufacturers, installers and service contractors, FMD retains a direct connection between the drawing office, the workshop and the building itself.

That connection matters particularly on public projects. Existing structures are rarely as straightforward as the drawings suggest. Openings vary, access is constrained, programmes change and work must often be carried out while buildings remain occupied. The ability to adjust a detail in the workshop, coordinate it with the site team and understand how it will eventually be maintained can be more valuable than an impressive catalogue.

FMD’s 5,000-square-metre base in Vitry-sur-Seine brings offices, manufacturing workshops and a showroom together on one site. Digital double-head saws, shears, press brakes, milling machines and punching equipment support both aluminium joinery and bespoke metalwork. This combination allows the company to move between repeatable production and the individual details required by renovation, public buildings and technically unusual projects.

It is a useful position to occupy. Industrial discipline provides consistency, but the work itself often demands the judgement of a specialist contractor. A replacement window in a school, a secure entrance to public housing or a custom steel element cannot always be reduced to a standard product code. Dimensions, usage, appearance, safety and installation sequence must be considered together.

FMD’s broad technical scope also reflects the way buildings are changing. Windows, doors and gates are no longer isolated elements. They may need to interact with access control, automation, fire-safety strategies, solar protection and building-management systems. A company that understands both the physical closure and the technology operating it is better placed to resolve these interfaces before they become problems on site.

This is particularly relevant in renovation. Greater Paris contains buildings from very different periods, construction methods and architectural traditions. Improving them requires more than replacing old components with new ones. The intervention must respect existing proportions, respond to current regulations and provide a credible maintenance strategy for the years ahead.

FMD describes its ambition simply: to create work designed to last. It is a phrase that carries more weight in public construction than it might in a conventional product brochure. Durability here concerns not only materials, but also repairability, correct installation and the availability of a contractor familiar with the original project.

The company’s scale supports this close involvement. With around 50 employees, FMD is large enough to operate substantial workshops and manage complex contracts, yet compact enough for engineering, production and site teams to remain connected. Its annual activity now extends across hundreds of projects, while turnover has grown to approximately €15 million.

Growth, however, is not the most interesting part of the story. FMD’s relevance comes from the type of capability it has preserved in a region where construction is frequently fragmented and industrial space increasingly difficult to maintain. Keeping design and fabrication close to the buildings being served gives the company a practical advantage: shorter lines of communication and a better understanding of the conditions in which its products must perform.

As Paris and its surrounding municipalities renew schools, housing, offices and civic infrastructure, the demand will not be for products alone. Clients will need contractors capable of navigating existing buildings, regulatory complexity, occupied sites and long-term maintenance.

FMD’s model is well suited to that future. It does not separate manufacturing from installation or new construction from the responsibility that follows handover. Instead, it treats the closure of a building as a continuous technical service, from the first survey to the repair that may be required years later.

After more than 50 years, the company’s strongest asset may be precisely this continuity. FMD does not simply manufacture for Greater Paris. It works within its buildings, understands their constraints and remains close enough to return when the next stage begins.