SIHGA Modulix®: Redefining Timber-to-Concrete Connections in Modern Construction

Modern timber construction is evolving rapidly. Architects, engineers, and contractors are now demanding solutions that are structurally reliable, faster to install, reusable, and compatible with circular building practices. This is where Modulix® – one of SIHGA’s most forward-thinking innovations – comes in.

Designed for timber frame and CLT (cross-laminated timber) structures, Modulix® transforms how wooden walls are connected to concrete foundations and bases. Instead of relying on bulky visible brackets and time-consuming alignment work, the system delivers a concealed, detachable and highly precise connection solution.

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What is Modulix®?

Modulix® is an innovative wall-to-floor connector developed for force-fit connections between timber walls and concrete substructures. It’s engineered specifically for:

• Timber frame construction
• Cross-laminated timber (CLT)
• Modular buildings
• Temporary structures
• Circular and reversible construction concepts

Unlike traditional angle brackets, Modulix® provides a concealed connection with centric load transfer directly along the wall axis. This improves both structural performance and visual aesthetics.

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Why do traditional connectors fall short?

Conventional timber-to-concrete connectors often create challenges such as:

• Visible steel brackets affecting aesthetics
• Complicated installation processes
• Limited adjustability on uneven concrete
• Difficulty dismantling and reusability
• Air-tightness interruptions in wall systems
• Reduced efficiency in modular construction

These issues become even more problematic in modern prefabricated timber projects where speed, precision and sustainability are essential.

Modulix® directly addresses these limitations.

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What are the key features?

Concealed and precise connection

• One of the biggest advantages of Modulix® is its hidden installation. The connector integrates directly into the timber element, eliminating visible external brackets.
• This creates cleaner architectural finishes with better airtightness. As well as reducing finishing work and improving design freedom.
• The connector transfers loads centrally through the wall axis, ensuring efficient structural performance.

Quick 90° locking mechanism

• Modulix® features a mechanically secured locking system, activated with a simple 90-degree turn using a dedicated spanner. This creates a backlash-free connection that is both secure and easy to inspect visually.
• The result is quicker wall installation, reduced labour cost, and simplified assembly workflows.

Height adjustment for real-world conditions

• Concrete surfaces are rarely perfect, but Modulix® solves this with integrated height adjustment ranging from 12mm to 30mm.
• Even more impressively, the connector can be readjusted after installation and locking. This allows teams to compensate for construction tolerances, uneven foundations, and settlement adjustments without dismantling the connection.

Designed for circular construction

• Modulix® is a fully detachable and reusable connection system. This makes it ideal for modular architecture, temporary structures, demountable buildings and circular economy construction strategies.
• As the industry shifts toward ‘cradle-to-cradle’ thinking, reusable structural systems like Modulix® are becoming increasingly more important.

Ideal for modular and prefabricated timber construction

• Prefabrication demands accuracy and repeatability, and Modulix® components can be pre-installed in timber elements before delivery to site. This dramatically reduces assembly time during installation.
• For modular builders, this means faster project completion and reduced on-site labour, alongside improved installation consistency and easier transportation and assembly.
• The connector is especially beneficial in projects where rapid deployment is essential.

High structural performance

Although visually compact, Modulix® is engineered for demanding structural requirements.

The system uses:

• Three-dimensional screw connections
• 45° screw alignment
• Tensile and shear force transfer
• Additional timber reinforcement effects

It also performs effectively on narrow concrete bases where traditional angle connectors may not fit properly.

Supporting accessories and system integration

SIHGA has developed a complete installation system around Modulix® which includes:

• Orakelix® for millimetre-precise levelling
• GoFix® HK screws for timber fastening
• Drilling jigs for precise installation
• Dedicated Modulix® adjustment tools
• Compatibility with Fischer concrete anchor systems

These accessories streamline installation and ensure reliable performance across different project types.

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The future of timber connections

As timber construction continues to grow worldwide, connection systems are becoming more important than ever. The success of prefabricated and modular buildings depends heavily on installation efficiency and structural reliability, while also being mindful of sustainability and the circular economy.

Modulix® represents a major step forward in all of these areas.

By combining concealed aesthetics, rapid installation, height adjustability, and circular economy principles, SIHGA has created a connector system aligned with the future of modern timber construction.

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Final thoughts

The construction industry is moving toward smarter, faster and more sustainable building methods. Traditional timber connectors often struggle to meet these evolving demands.

Modulix® offers a compelling alternative:

• Concealed and clean connections
• Fast installation
• Adjustable precision
• Structural reliability
• Full reversibility and reuse

For architects, engineers and modular builders looking to optimise timber-to-concrete connections, Modulix® may well become one of the most important innovations in modern timber construction.

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Want to learn more about using Modulix on your project? Get in touch with our technical team.