Posted: February 12th, 2010
By Joe Heidler, JV Heidler Roofing
Right now in our area there are huge problems with ice forming on the eaves of buildings. I just heard that some of our streets in Lancaster have had their sidewalks closed due to “killsickles”. These ice monstrosities are formed when the roof warms up from the sun or from heat loss inside the living space. Then water runs down and cools at the overhangs, or eaves. The water freezes and forms an ice dam. This backs up water that may be running down the roof, thus providing potential water leakage and damage to the interior of the building.
We recommend on new installations that an ice and water guard membrane be installed to prevent this backed up water from entering the structure.
It can be very dangerous to remove these hanging ice sickles. They can be extremely heavy and falling from the height of a building can injure or even kill people below. Some people use heat tapes to prevent the ice dams from forming. IF it is possible to safely remove snow from the roof edge, be sure to remove it back about 3 feet. This is very common in Northern areas of the country, but it is rarely an issue here in Lancaster and York. There are special snow rakes that are used to clean snow from roofs in these Northern areas, but I have never seen one around here.
It is a good idea to prevent people from walking under these areas. Use caution tape or warning flags to rope the area off. Safety is our number one concern. If in doubt, call an expert. Please, whatever you do, be SAFE!
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