Tight, durable and breathable log structure

Once the house has been designed, the logs are trimmed at the Honkamajat plant to millimetre precision, in compliance with the construction drawing, to ensure that all the different building elements fit accurately.

Since wood is a natural material, its properties introduce challenges into log structures. Honkamajat is an experienced professional in log construction. The following properties, among other things, are taken into consideration in its products:

Durability – Log buildings even endure earthquakes
The log walls made by Honkamajat are structurally robust and have good strength properties. Thanks to this, a log wall endures load and stress well. A log house even copes with earthquakes.

Structure takes into account the living of wood
Each individual log shrinks a few millimetres over time, which leads to the entire construction settling a few centimetres. Honkamajat takes the natural settling property of log structures into consideration, for example, by making appropriate allowance in the structures and by using tongued jambs at the intersections of wall and roof structures.

While it is impossible to prevent wood from changing and transforming, log production aims to reduce the effects using various sawing and drying techniques. Transformations can also be reduced by making logs from two or more billets, which, once laminated, cannot change their form as much as a massive log. This also improves the strength properties of the log wall.

Sealing improves energy-efficiency
A log wall is a breathable structure that balances the humidity and temperature of indoor air. However, this does not affect the wall’s tightness – that is, the passing of air through the wall. What essentially affects tightness is the sealing used between logs, as well as in corners and gaps.

Unique ”Tiivishirsi” structure
Tightness has a crucial impact on a building’s energy consumption. The design-protected Honkamajat Tiivishirsi structure features EPDM rubber insulation, which has been shown to essentially improve the tightness of walls. Combined with other insulating elements, such as tightening bolts and spring nails at bevelled edges, Tiivishirsi makes for extremely tight wall structures.

Variation in humidity and thermal insulation properties
A log wall balances variation in the humidity of its surroundings. However, the ability of wood to bind moisture does not affect the tightness of walls. In other words, minor humidity strain does not damage the structure as long as the moisture dries off later.

Honkamajat recommends that the outside be treated with surface treatment agents that protect the logs from environmental strain but do not form a film slowing down drying on the surface of logs.

The thermal insulation capacity of a log wall depends on the thickness of the wall: the thicker the wall the better its thermal insulation capacity. If you wish to improve the wall’s insulation capacity and further reduce energy consumption, additional insulation can be used on the inside or outside.