Warming with a wooden log house. The tree has good heat -insulating properties, and therefore you can insulate the well with this material. Due to the choice of wood, you can vary the cost of the project, which is important with a desire for minimizing costs. For insulation, it is necessary to perform a fainting that is installed on a hard foundation. The structure of the fainting should take into account the deepening of the foundation to the ground level. We fall asleep with crushed stone and fill with concrete, a log house is installed on top.