While icicles may be pretty, they spell trouble—especially for those in heritage homes. The same conditions that allow icicles to form along the eaves of your home are the same conditions that lead to ice dams—thick ridges of solid ice that can tear down gutters, loosen shingles and spring leaks. To prevent this type of damage from occurring, get in touch with Thomson Roofing Inc. Homeowners in Cambridge, Kitchener and Waterloo have trusted us to remove snow and ice from their roofs for over 30 years. Call us for rooftop snow removal in Cambridge.