Cross-laminated timber (CLT) is a solid, multi-layered wood product that combines excellent structural performance with forward-looking ecological standards.
CONSTRUCTION MATERIAL CLT
CLT cross-laminated timber -
The building material of the future
Whether in residential or commercial construction – or when adding additional storeys – CLT impresses with large-format elements, millimetre-precise joinery, and ready-to-install soffits.
CLT (cross-laminated timber) is a high-performance solid wood product with impressive structural qualities thanks to its multi-layered construction. It consists of at least three layers of wood, each glued at a 90-degree angle to the next. This structure provides exceptional stability and load-bearing capacity, enabling generous spans in modern construction.
Using CLT offers numerous advantages: it’s highly resource-efficient, sourced from sustainably managed forests, and contributes to carbon sequestration. As a natural building material, it also promotes a healthy indoor climate and releases no harmful emissions.
CLT design
- Natural, visually appealing surfaces
- Simple, clear, and functional spatial concepts
- More design freedom and usable living space
CLT speed
- Up to 30% faster construction times
- Greater design flexibility and increased usable living space
- Defined delivery and installation schedules
CLT cost certainty
- High planning security
- Increased productivity through shorter assembly times
- Cost-neutral compared to other construction methods
CLT sustainability
- CO₂-friendly and renewable
- Regionally available with short transportation routes
- CO₂ reduction through decreased use of concrete and steel
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TECHNICAL DESCRIPTION
CLT I cross-laminated timber:
a true high-tech product
Surfaces
Surfaces sanded along the grain, available on one side in industrial quality (NSI), industrial plus quality or in visible quality.
Cutting
Elements can be joined as required and with millimetre precision in CNC machining centers. Door and window openings, openings and the factory integration of ELT and HLS processing is possible.
Defined properties
Guaranteed physical and mechanical properties enable easy implementation and testing. The building material is lightweight and can transfer high loads in several directions.
CLT I Cross Laminated Timber
Airtightness
The individual lamellas of the top layers are glued together to form a single-layer panel to create a high level of airtightness. This process also increases stability, shear rigidity and earthquake resistance.
Fire and noise protection
High sound and fire protection with simultaneous thermal insulation thanks to solid construction.
Simple details
With defined connection points, uncomplicated wall and ceiling structures and standardized components.
Material properties:
Application: Wall, ceiling and roof element
Structure: 3-, 5-, 7-layer
Format: Freely selectable
Width: up to 2.25-3.50 m
Length: up to 8-16 m
Thickness: 60-320 mm
Wood species: Spruce
Wood moisture content: 12 % +/- 2 %
Density: approx. 470 km/m3
Thermal conductivity: 0.11 - 0.13 W/(mK) 20-80
Water vapor / diffusion resistance: 20-80
Specific heat capacity: 1600 J/(kgK)
Service classes according to EN 1995-1-1: Approved for service classes 1 or 2 according to EN 1995-1-1
Load-bearing properties of CLT.
CLT elements are used as load-bearing components in modern timber construction. They are made from strength-graded boards with widths ranging from 80 to 240 mm and thicknesses between 20 and 40 mm.
The individual layers are typically bonded crosswise at 90° angles using structural adhesives. This cross-lamination technique enhances both the load-bearing capacity and dimensional stability of the panels, ensuring consistent swelling and shrinkage behaviour. Panel configurations with 3, 5 or 7 layers are possible. Depending on the thickness of each layer, overall panel thicknesses range from 60 to 400 mm.
Maximum panel dimensions are determined by transport requirements and typically reach up to 3.5 metres in width and 16 metres in length. The combination of longitudinal and transverse layers allows for a wide variety of structural configurations – optimised for static performance, fire safety and construction efficiency.
The orientation of the top layer can be either longitudinal (L-elements) or transverse (C-elements), depending on the static requirements. This makes CLT suitable for use in ceilings, roofs and wall elements. With precise sorting and finishing (such as sanding), structural CLT panels can also serve as high-quality visible surfaces – combining load-bearing function with aesthetic appeal.
Larger projects, shorter construction times - with CLT!
Whether you're a large timber construction company or a small carpentry business, whether you have many employees or just a few – with CLT solid wood, you have the opportunity to take on projects of all sizes and bring them to life in line with your customers' needs.
- Efficient and precise installation
- Up to 30% faster construction times
- Increase in order capacities
Larger projects, shorter construction times - with CLT!
Do you have any questions?
We are happy to help!
If you're unsure about a project, give us a call. As specialists for CLT products, we know exactly what matters. We'll find the right material for you to make your project a reality and satisfy your customers.
Mon-Fri: 8.30 a.m. to 5.30 p.m.
DESIGN
CLT design -
Where nature shapes architecture.
Wood has a long tradition as a structural material. Its development into CLT opens up new possibilities in terms of span, height, and architectural expression.
CLT: Naturally beautiful surfaces
A solid timber house made of CLT brings a substantial volume of wood into the building. This helps regulate both heat and indoor humidity, creating a consistently comfortable living environment.
Creation of simple & clear functional spaces
Cross-laminated timber enables a modern, individual architectural style – combining efficiency, natural aesthetics, comfort and sustainability.
More design freedom & usable living space
Large-format CLT panels make it easy to solve static challenges while enabling flexible floor plans and open spaces.
START PROJECT
Build your project easier and faster with CLT!
Or give us a call. Mon-Fri from 8.30 a.m. - 5.30 p.m.
SPEED
Fast, faster, CLT.
The transformation of simple timber layers into highly efficient prefabricated components not only expands design and structural possibilities – it also brings remarkable speed to the construction site.
Up to 30% faster construction times
Many of the properties of CLT / cross laminated timber result in shorter construction times:
- Defined physical and mechanical properties
- Large-format components
- Few layers in the structure
- no foils
Greater design flexibility and increased usable living space
Thanks to detailed CAD planning in advance, components and assembly processes can be planned in 3D. The cross laminated timber panels are pre-dimensioned and set in the factory using CNC technology on large portal processing machines.
Defined delivery and installation schedules
The scope of delivery for a detached house, for example, is two 40-ton trucks. The logistics are planned in such a way that the trucks are loaded according to a coordinated assembly sequence and dispatched to the construction site just-in-time.
COST CERTAINTY
A high degree of prefabrication and fast construction progress.
Buildings and components made of CLT are fully pre-planned in a 3D CAD model and manufactured with millimetre precision. Short construction times are made possible through well-coordinated logistics and detailed assembly planning.
The high level of planning reliability – both in terms of timber volumes and the construction process – ensures cost transparency and makes all project stages easier to calculate.
Increased productivity through shorter assembly times
Cross laminated timber components are delivered directly to the construction site, ready for assembly and easy to assemble. Assembly takes place directly from the truck trailer in a pre-planned assembly sequence.
High planning security
The detailed CAD planning and prefabrication of cross laminated timber ensures high precision.
This results in a construction process that is characterized by predictability, faster completion, a reduced need for construction workers, optimized logistics and less disruption to the construction site environment.
Lightweight building material
Compared to mineral building materials or steel, the low weight of cross laminated timber makes it easier to transport and handle on the construction site.
Lighter cranes can be used on site and less storage space is required, especially on inner-city construction sites.
A large proportion of the transportation of components to the construction site can also be saved.
Cost-neutral compared to other construction methods
Timber construction = expensive. This is a common prejudice regarding construction costs.
However, this requires a differentiated view, because timber construction can do more!
Solid timber construction and hybrid solutions
When building with prefabricated cross laminated timber elements, timber constructors can optimize their fixed costs. Joinery and transportation become calculable cost items.
More net from gross
With large-format solid wood panels, even structural challenges can be overcome without any problems, while CLT's slimline 10% structure allows for more living space with maximum energy efficiency.
START PROJECT
Build your project easier and faster with CLT!
Or give us a call. Mon-Fri from 8.30 a.m. - 5.30 p.m.
SUSTAINABILITY
CLT stands for sustainability -
Quality construction with an ecological bonus
In addition to its structural and aesthetic advantages, a solid timber house made of cross-laminated timber also offers a compelling environmental benefit. The structural use of wood is one of the few ways to actively store CO₂. What’s more, wood is a renewable, regionally available resource that regenerates continuously – and across Europe, more is grown than harvested.
CO₂ storage
As it grows, wood binds large quantities of carbon dioxide (CO₂) and at the same time reduces the amount of carbon dioxide in the atmosphere. One cubic meter of spruce wood therefore stores around one ton of CO₂.
Renewable
The raw material wood, obtained through controlled sustainable forestry, therefore benefits the climate without damaging the forest as a habitat.
CO₂ positive
Walls, roofs and ceilings made of solid wood - the more solid wood is used, the better the ecological balance of a house. Even CO₂-neutral or CO₂-positive wooden houses are possible.
CO₂ reduction through decreased use of concrete and steel
The traditional construction industry releases large amounts of CO₂. It is estimated that the industry is responsible for around 15% of global CO₂ emissions.
Regionally available with short transportation routes
Throughout Germany and Europe, more usable timber is currently growing every year than is being felled.
The timber industry in Germany, Bavaria and the Alpine region has a long tradition; for example, one third of Bavaria is forested.
