Modern residential extension with vertical Kiri wood façade in Stuttgart, fastened with LIGNOLOC® wooden nails by BECK

Residantial extension Kiri Wood Façade

Stuttgart | GER

The Kiri wood façade of a residential extension in Stuttgart was fastened using LIGNOLOC® wooden nails – resulting in a fully circular timber cladding without metal.

As part of a proof of concept for the TRIQBRIQ® timber construction system, an extension to a residential building in Stuttgart-Weilimdorf was clad with untreated kiri wood – a particularly lightweight, dimensionally stable, and weather-resistant material. The façade was fastened to the extension made of TRIQBRIQ® modules using LIGNOLOC® wooden nails by BECK, enabling a metal-free structure that meets all the criteria for monomaterial deconstruction. This project impressively demonstrates how new timber construction systems can be combined with innovative façade solutions to create durable and circular buildings.

Modern expansion – naturally designed

For the extension of a residential building in Stuttgart-Weilimdorf, an untreated Kiri wood façade was used. Combined with metal-free LIGNOLOC® wooden nails by BECK, this resulted in a modern building envelope that can be disassembled as a monomaterial system. A successful example of how sustainable materials and clear architectural design go hand in hand. Photo credit: Werner Grosse

Project data

  • Project: Residential extension with Kiri wood façade

  • Products Used: LIGNOLOC® wooden nails with head

  • Standort: Stuttgart-Weilimdorf

  • Completion: 2022

  • LIGNOLOC® Application: Fastening of a Kiri wood façade

What Is Kiri Wood?

Kiri wood comes from the fast-growing Paulownia tree and is one of the lightest commercially used woods worldwide. It is dimensionally stable, resistant to moisture fluctuations, flame-retardant (ignition temperature > 400 °C), and easy to work with. Its low density (250–360 kg/m³) makes it ideal for lightweight construction applications – such as cladding, cross-laminated timber or interior fittings. Due to short rotation periods, high CO₂-binding capacity and minimal land sealing, Kiri is considered a resource-efficient and ecologically attractive option. In Europe, climate-adapted and frost-resistant cultivars are used for plantation growing.

Discover now: Kiri wood

Fastening kiri wood without metal

The use of LIGNOLOC® wooden nails by BECK enables the fastening of Kiri wood façades without metal components or full-surface adhesive bonding. Made from European beech wood, the nails create durable wood-to-wood connections through lignin adhesion. This allows for fully recyclable, homogeneous timber assemblies that meet the highest standards of material purity and sustainability.

Discover the LIGNOLOC® wooden nail systems

THE Triqbriq® system

The TRIQBRIQ® system is a solid wood construction system made from small, cuboid timber blocks that are stacked in interlocking layers and can be permanently joined using LIGNOLOC® wooden nails by BECK. Made of untreated reclaimed wood, the elements are fully recyclable. Thanks to its modular design, the system is suitable for automated prefabrication and enables fast, resource-efficient construction.

More about the TRIQBRIQ® system

Circular Design in timber Construction

The reference project illustrates the successful integration of modern materials – Kiri wood and metal-free LIGNOLOC® wooden nails – into holistically sustainable timber construction systems. The pure-grade construction makes a genuine contribution to advancing Design for Disassembly and represents a future-proof approach to contemporary timber façades in modular construction.

Discover more exciting residential construction projects featuring LIGNOLOC® wooden nails!