How to brown a bathhouse from a bar

For thermal insulation of the log house from the beam, various heaters are used, such as moss, bag or linen — burning cord, these all materials of natural origin exist synthetically, but they are not enough in this case and it is not recommended to use them. What exactly is the material to choose for insulation of a wooden structure preference for you is the same thing that the tree should be used when building a bathhouse.