Figure in the cost of excavation. A concrete slab is generally installed over a gravel base. The base is 4 inches, and the slab itself is 4 inches, with 2 inches above ground and 2 inches below. This means that for the average slab, you will be digging down 6 inches.
Quick facts about the weather and daylight in January. Average temperature: -0.11Â°C / 31.8Â°F. Average hours of sunlight: 24.8. Average of lowest and highest recorded temperature in January: Low -10.55Â°C / 13.01Â°F â High 8.15Â°C / 46.67Â°F. Length of day on January 1st: 4 hours and 24 minutes. If you are looking for Mai Thais by the pool and tropical weather, Iceland in January is probably not for you. If, however, winter is your jam then pack your bags and head on over.
February 1 is the shortest day of the month with 10.52 daylight hours; February 28 is the longest day with 11.34 hours of daylight. It is this increase in daylight that is responsible for the increase in sunshine hours. While January days had 7 hours of sunshine, February has 8 hours of sunshine per day on average. A slight decrease in cloud cover may also play a small part in that rise in sunshine hours, although it is minimal. Cloud cover decreases from 43% to 38% in the course of the month.