Wood is the best natural insulator. A concrete wall would need to be ten feet thick to equal the insulation qualities of our 8 inch thick logs. Wood is six times better than brick, 1600 times better than aluminum. Consideration should be given to properly insulate the floors and roof. We recommend the use of insulated windows. With constant rising utility costs, it is wise to make your home as energy efficient as possible. It generally costs 17 – 20% less to heat or cool a Lincoln Log home compared to a conventional house.