For log-houses you can use three types of wood:
- dried wood
- non-dried wood
- laminated wood
Dried wood is cut down, peeled and then dried in a drier room. At sixty degrees Celcius the wood will dry with a speed of one centimeter per day and so a forty centimeter log will have to stay in the drier for twenty days. After drying the wood is planed, sawn, then used for building. Dried wood still has residual humidity, approximately twenty percent. This residue evaporates after assembly of the house and as a result, even when built with dried wood, the wooden house will still shrink, all be it minimally.
Non-dried wood is cut, stored in open air, then after a few weeks or months it is peeled, planed and cut, then used for building. After the peeling/planing/cutting the wood will be treated with anti fungus paints. These types of wooden houses dry AFTER building the house, total drying time can be two years or even more. While building the wood has a humidity percentage of approximately thirty percent and this will eventually decrease down to fifteen percent. All the time the house will shrink, warp and bend. To prevent walls from too bending and warping too much the logs are connected with big plugs. These kinds of plugs are sometimes also used when building with dried or laminated wood. This non-dried wood technique is hardly used in West Europe. In large parts of of Central and East Europe this technique is very much normal and accepted and complete churches are being built using this technique and these churches will stand for two hundred years or more without a problem. Advantages of this technique: low-cost.
Laminated wood, just like dried wood, is cut and planed, then dried. Thereafter it is cut into forty milli-meter planks and glued together into beams and logs. The beams and logs are then used to build the house. The main advantage of this technique that there is no more bending and warping, these logs and beams are like bricks! Disadvantage is of course the extra cost that comes with the cutting and gluing.
What does Namas/Lithouse use? We mostly use laminated wood, on request we can use dried wood. We hardly ever use non-dried wood.