Readily winter-warm Warmth and lack of draught in a house improves its livability and lessen the energy costs. A Lapponia house can cut the owner's heating costs by a third or even a half. A special measure, U-valuen is used to tell how much warmth a wall lets through. The smaller the figure is, the smaller is the proportion of warmth wasted. The walls of Lapponia thermo log houses have 120 mm or 170 mm of thermal insulation inside. The U -value of these kinds of walls are excellent: 0,22 W/m2K for 170 mm insulation and 0,31 W/m2K for 120 mm insulation. Lapponia thermo log homes are fully suitable for use as year-round residences without additional insulation. Besides, Lapponia houses reach rapidly the room temperature even if the house had been unheated in winter conditions as is often the case with vacation homes.
ordinary round timber wall 210 mm U -value = 0,60 W/m2K	ordinary planed timber wall 200 mm U -value = 0,58 W/m2K