the heat from the house passes through the roof and melts the snow. it freezes in the eaves of the roof and forms icicles. repel t

avalanche carried chimney construction cottage damage dirty down eaves equipment falling fixing forms freezes freezing galvanized gutter heat heavy house ice icicle icicles icile industrial industry inside insulation iron low material melting melts metal mountain must overhang overhanging overweight passes passing poor protection repel roof safety slide slip slow snow steel thermic through tin truss tube wall water winter