Technology

What is glued laminated beam?

Wood is environment-friendly, sustainable and renewable natural material. It is the only material which „breathes” ensuring moisture balance in your home,  emitting pleasant coolness during hot weather and maintaining warmth during cold weather. The beneficial effects of wood on human health are evidenced by various scientific investigations therefore such home would be a guarantee to health and well-being of your family.  Such a timber house is characterized not only with high-quality materials and industrious work invested in it, but also reponsibility for the surrounding environment.The log building erected from glued laminated frames, will keep its initial appearance longer. The above frames are made of coniferous trees: fir-trees or pine-trees. The walls of the building will not have cracks and consequently produce less  heat loss and will improve the house aesthetics. This technology provides wood drying in a drying camera so that all boards would be equally dried resulting in all superflous branch spots remobed. The tree is planed, wood defects cut and again it is „grown” by gluing and pressing together. The thickness of the external wall varies from 120 mm to 240 mm. The necessary components for the house are made of beams starting with places of joints up to the technical system channels. This process takes places automatically thus ensuring accuaracy and the highest quality.

The majority of the implemented projects are clients’ bespoken. If a client applies to us with an idea or vision about timber house erection, our architects will assist to make sketches and we together will implement this project into life. 

What difference does Timbero wood houses make? 

  • Timbero offers to manufacture completely all components of  timer house constructions: wall frames, roof and floor frames, mezzanine flooring panels, interior ceiling and wall cladding boards, floor and terrace boards.
  • The glued laminated beams used in timber house frames, are certified against the European standards and regulations EN 14080; DIN No1052:2008; EN 14081;
  • All utilised timber material is FSC certified. FSC is an international  responsible forestry certificate.
  • No toxic glues are applied in manufacturing of glued laminated beams. 
  • Fir-trees and pine-trees from the northern regions of Russia  (Arkchangelsk and Carelia) are used in fabrication. They are very resistant, have high density and resin saturation. If the conditions under which the trees gave grown, are more north extreme, the trees turn out to be  more resistant and qualitative.
  • More than 3000 house projects are implemented in cooperation with partners.
  • The length of the glued laminated beam can reach  13.5 meters enabling to implement large complex projects.

The gluing point on the glue-laminated  beam  looks  practically invisible thus creating an aesthetic and uniform  appearance of walls  and other house structures.

Sizes of profiled glued laminated beams for the wall frames of the house:

The glued laminated beams consist of several layers of lumber bonded together enabling to cut out the defective sections and use only visually attractive and mechanically resistant  lumber without sapped resin and dark places which have remained after removing the branches as well as to decrease the probability of cracking and settling.  In visible places the material is used which is not cut from the tree core  thus reducing the cracking risk of the glued laminated beam.

Profiling of the glued laminated beam is formed so as to ensure maximum density of walls. 

Glued laminated beams for floor, roof and intermediary floor structures:

Various size glue-laminated beams are used for other structures of the house (roof, floors, intermediary floor)  depending on the specifications of technical project for the house.  

 
Beam sizes.jpg

Beam sizes.jpg

Technical specification

Heat transfer coefficients

The energy consumption for the log external construction is significantly lower than the other building materials. This is confirmed by  “Energy efficiency monitoring project of test stands” www.eem.lv, carried out by RTU.

The actual thermal resistance value for glued laminated beam wall is  30% lower than designed. The investigation confirms that wood is not only ecological and healthy,  but also a very energy efficient building material.

The glued laminated beam construction has the lowest thermal resistancy and this means that the construction may retain heat in the premise for a long time in comparison with other building materials.

Erecting timber houses for many years, we have accumulated a lot of experience and information from our customers and we akcknowledge that the thermal resistance of timber houses is more efficient than indicated in the  technical parameters. 

glued laminated beam heat coefficients.jpg

glued laminated beam heat coefficients.jpg

 
heat coefficients.jpg

heat coefficients.jpg

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Technological process of producing glued laminated beam

Raw material - timber

All timber used in fabrication of  glued laminated wood beams comes from Russia Northern regions (Arkchangelsk and Carelia). The wood grown in extreme conditions ensures high quality, less knottiness, much more density  and endurance thus enabling to guarantee  “premium class”  stable quality.

Processing and drying

The sawn timber is sorted according to quality and prepared for drying. The drying process takes place in Bollman, Tekmawood, Muhlbok-Vanichek drying cameras until the lumber is dried to 10-12 per cent humidity.   

Internal quality control of timber products

With the help of scanner Microtec Goldeneye 702 the defects of timber products are identified and the machinery automatically transmits signal to the extenders which remove the fallen branches, dry branches, resin pockets, cracked edges of boards and other defects. Afterwards the material is sorted according to strength classes (C16-C45) and the class of material visual appearance.

Length feeding

The process of feeding in length is provided by manufacturing equipment Doucet Machineries.  The main difference lies in length feeding horizontally thus the  “criss-cross” feeding place is not visible and the glued beam retains its aesthetic, regular shape.  

Gluing in thickness

The material is glued in thickness by Kallesoe press, and the surface of the material which has undegone length feeding, is heated up at molecular level ensuring high quality gluing.

Profiling and lengthening

Wall profiles are formed to ensure maximum wall density against wind and the construction stability.  After glued beam profile creation, further on, in accordance with the design, the units are lengthened and criss cross corner connections are cut,  and the blocks for house walls are formed.  The corner connection is cut with maximum accuaracy ensuring ideal density for corner connection.

Quality control

The glued beams have all necessary prouduction process quality control certifiactes.

European Union conformity certificate  EN 14081, certifying the conformity of timber structure strength. European Union conformity certificate EN 14080 certifying the glued structures operational characteristics and strength of constructions. MPA certificate is issued by Otto-Graf-Institut, Stuttgart, Germany.  All glued constructions are certified also for Japanese market according to standard JAS GLT 1152.

FSC – forest stewardship council certification

All products have FSC certificate confirming that principles of environment friendly timber harvesting and management are followed in the whole timber handling process „from forest harvesting till end user”. EU organic certificate E1 confirms the organic cleanliness of the materials.

Manufacturing

The glued beams are manufactured on modern production lines conforming to the Eurupean quality standards and the whole production process is certified.