Yes, improper roof ventilation can result in the formation of ice dams. This is because warm air from inside the home rises into the attic and warms the roof, causing snow to melt. When this melted snow refreezes at roof edges it forms an ice dam that prevents further melting snow from draining off your roof – leading to roof leaks and damage. Proper attic ventilation is key to avoiding this problem; make sure there are enough vents near the roof’s peak and along the roof edges.