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Pluspuu log houses use a range of optional wall structures. The latest technological innovation is the non-settling log. It could be considered as the greatest advance in log construction since the introduction of the lamella log.

Cross-laminated timber (CLT) panels in combination with the non-settling logs offer completely new possibilities in timber house construction.

Non-settling log

The non-settling log permits the use of a wide range of advanced architectural solutions and structural details, such as windows and doors without covering strips. Also, there is no need for the visible external vertical wall supports typical of traditional log houses. The new structural designs permitted by technological advances make the houses more compatible with urban environments. While the non-settling log system is more expensive than the lamella log, the difference in price is compensated for by the fact that no allowance needs to be made for settling and there is no need for post-construction adjustment of screw jacks, windows, doors, etc.

Non-settling properties are achieved by laying the centremost lamellas of the log vertically. Non-settling logs are made of spruce or pine.

CLT solid wood panels (clt=cross laminated timber)

The CLT solid wood panels, widely used in the construction of multistorey timber buildings, are equally suited for the ceiling and floor structures of a log house.
 They can be used to design exquisite cantilevered balconies and terraces– without any additional braces or supports. CLT panels can also be used for building partitioning walls and staircases.

Solid logs (traditional log)

A kiln-dried and planed solid wood log sawn from a single trunk is the best choice for the builder who wants to use natural materials and ensure healthy indoor air. Solid wood logs are prone to cracking, which is natural. Cracks may affect the aesthetics of the house but not its energy efficiency or other performance characteristics. Cracking is a positive development in that it increases the surface area of the timber exposed to indoor air, which improves the log’s ability to absorb and release moisture. Solid wood logs are the most ecological method of construction – a real contribution to the environment. Traditional log construction and modern architecture are closer together than most people perhaps think. Solid wood logs are always made from pine.

Lamella log

The lamella log is the most common material used in log house walls. It is only prone to slight cracking and settling. The visible surfaces of Pluspuu lamella logs show no horizontal seams. Non-settling logs are made of spruce or pine.

Corner joints

Mitred corner joint

Aside from the traditional full-scribe joints, Pluspuu houses are available with the mitred corner joints shown here. This joint construction with its narrow log seams makes it possible to build modern houses suitable for urban environments. As well as being fine and light in appearance, it also offers the best sealing performance.

The logs are inter-connected using mitred dovetail joints. With mitred corner joints, the log layers are always aligned, eliminating the need for traditional overlapping joints.