Cross Laminated Timber

CLT solid wood technology is the most advanced wood construction technology

CLT Production involves state-of-the-art computer-controlled factory machinery.

Boards of kiln-dried, finger-jointed spruce are sorted and cut into sheets of up to 10.5m by 2,95m. These sheets are then stacked and glued in press with microwave fixation in perpendicular layers. The panels are available in 3, 4 or 5 board layers.

CLT can be used in all load-bearing and visual structures of the house - base floor, intermediate floor, roof, exterior walls, interior walls, terraces and balconies.

 

The benefits of
CLT- Construction

Sustainable and fast grown wood species are used in the manufacturing of the elements. CLT is manufactured conforming to the European quality standards and the whole production process is certified.The CLT-element forms both the finished interior surface and load bearing structure, reducing finishing time significantly.

Reduced on site building time

The elements are manufactured in controlled conditions and delivered to the construction site, resulting in less need for on-site storage and reducing on site building time

Excellent fire resistance

CLT panels have good fire resistance as it is a massive wooden structure. The panel itself will char in a case of fire, but structural bearing capabilities will last. Insulation and other construction materials are fire proof as well.

Size and style flexibility

CLT panel has features as a load-bearing house structure and it could be done in many different sizes, styles and can be used for walls, floor and roof. As panels are manufactured in the factory and brought to the site, it reduces construction time significantly.

Ecology

In the manufacturing of CLT-elements even the second grade wood can be utilized resulting in efficient use of the log and smaller carbon footprint. Other elements such as adhesives do not contain toxic substances.

Sound and thermo performance

CLT panels are produced to be practical and with good sound insulation as well as excellent thermal conductivity. This means that throughout the year house will provide a pleasant climate and sounds from the outside will not affect your privacy and vice versa.

Standards

Sustainable and fast grown wood species are used in the manufacturing of the elements. CLT is manufactured conforming to the European quality standards and the whole production process is certified.

Technical description

Use of CLT CLT can be used in all load-bearing and visual structures of the house - base floor, intermediate floor, roof, exterior walls, interior walls, terraces and balconies
Surface quality Industrial, non-visible, visible
Maximum length 10.50m
Maximum width 2.95m
Maximum thickness 60 - 260mm
Count of layers 3, 4, 5
Wood species Spruce, Pine
Grade C24, C30 (for structural calculations)
Moisture content 12% +/- 2%
Bonding adhesive Prefere 4546 by Dynea, HB S029 Purbond by Loctite
Weight 500kg/m3 (for structural calculations)
Dimensional stability
(panel size)
0.02% change for every 1% change in panel moisture content
Dimensional stability
(panel thickness)
0.24% change for every 1% change in panel moisture content
Reaction to fire D-s2, d0 in accordance with Commission Decision 2003/43/EC
Resistance to fire Charring rate of 0.65 mm/min in accordance with EN 1995-1-2
Water vapor resistance µ 20 to 50 in accordance with EN 12524
Thermal conductivity λ 0.13 W/(mK) in accordance with EN 12524
Specific heat capacity 1600 J/(kgK) in accordance with EN 12524
Air tightness  Airtightness of a 3-layer CLT panel   and of panel joints has been tested to EN 12114 where it was found   that the volumetric rates of flow were outside the measurable range.