Glued laminated timber house

While handcrafted log houses have already been built for centuries, the production ofglued laminated timber houses is quite a new technology. Logs for such houses are glued from timber beams and then further treated mechanically, mostly milled. Logs can be glued vertically or horizontally. It is very important that logs are glued using eco-friendly adhesive permitting air and water vapour to pass through. This preserves the natural properties of log houses and let them "breathe".

Following this technology, timber only serves as a raw material for making a glued laminated timber-beam which, in its turn, becomes a log for a dwelling house. Softwood is used to make glued laminated timber beams. Timber is dried in special drying chambers until it reaches 10-12 % moisture content. Dried boards are planed to provide them a precise geometrical shape. Then they are sorted and glued into a timber beam. The number of glued laminated boards can range from 2 to 5. This enables manufacturing of quite "thick" (up to 200 mm) glued timber beams. Moisture resistant and eco-friendly adhesive is used for gluing.

Advantages of glued laminated timber houses:
• High surface quality. All knots and other defects are eliminated from timbers before they are glued. Preparations are sorted and matched by the colour and texture. This ensures irreproachable look of glued laminated timber products.
• Structural stability. Glued laminated timber retains its shape and dimensions. It does not deform, as there are no internal tensions and the existing ones compensate each other. In addition, a house from glued laminated timber does not need long time for settling and this enables considerable saving of finishing time. 
• Strength. Structures from glued laminated timber demonstrate strength by 50-70% better than ordinary timber.
• Thermal insulation. Lower probability of the development of gaps and cracks improves thermal performance of glued laminated timber beams.

Disadvantages of glued laminated timber houses:
• Relatively higher price.
• Declared standards are not always met (houses settle more, there appear more cracks and gaps in the corners).
• Manufacturers can use some substandard timber which darken, come unglued, etc. after some time.
Compared to natural logs, glued laminated timber beams, to a certain extent, lose the natural look of wood.