Balmera®: the metal balcony system designed for renovation and timber construction

Designed and manufactured in Alsace, this modular metal system is aimed at social housing providers, construction companies, and architects involved in energy renovation or timber-frame building projects. Thanks to its ingenious design, BALMERA® makes it easy to add exterior balconies to existing buildings.

According to Christian Hanssen, head of Métallerie Hanssen: “We designed BALMERA® to offer a reliable, quick-to-install, and aesthetically pleasing solution. Its patented load-bearing profile with integrated water recovery meets the requirements of thermal and energy-efficient renovation.”

A modular and efficient system

BALMERA® is made entirely of galvanized steel (with optional powder coating). Its modular design allows for adaptation to site requirements: configurations with 2 or 4 posts, or a guyed version. The system supports live loads of 350 kg/m² and has an R30 fire rating, guaranteeing the safety and durability of the structure.

Adaptable to architectural desires, the BALMERA® system accepts different types of decking, including wood, without compromising on fire compliance.

The exclusive G profile developed by Métallerie Hanssen incorporates a rainwater harvesting system, a major technical and aesthetic advantage. Water can be drained from the posts for discharge into the sewer system or for storage and subsequent use for irrigation.

Each balcony is custom-designed in our Strasbourg workshops using CNC machines, guaranteeing precise, repeatable, and high-quality manufacturing. This industrial expertise is combined with artisanal finishing to create unique and durable pieces.

A solution that promotes rehabilitation and improves the comfort of residents

BALMERA® addresses the growing demand for outdoor spaces in multi-family housing and represents a significant opportunity for thermal and energy-efficient renovation. By combining engineering, design, and metalwork expertise, Métallerie Hanssen offers a solution tailored to the challenges of modernizing the housing stock.

Among the emblematic projects: the Signal Tower in the Elsau district and the Cité Lizé in Strasbourg where several BALMERA® balconies were installed as part of a rehabilitation program led respectively by Ophéa and Habitation moderne.