Sadly, for some homeowners ice damming and water damage can be one of the first signs of spring.
In this interview with CTV News, Steve Fox of Promus Barrie explains some the situations his property restoration company is called in to deal with on a daily basis every year at this time.
Causes of ice damming:
Over the winter snow accumulates on the roof. In areas where the snow is covering the transition between interior and exterior spaces, ice dams may form. If there is sufficient heat loss from the heated space to melt the first few inches of snow on the shingles, water will form. The water will run down the roof until it encounters the un-melted snow over the unheated space. There it stops, and re-freezes. After a while, a dam of ice forms on the roof above the exterior wall. The dam can cause the water to form a small pool. Shingle type roofs cannot stop pooling water. Water may back up under the edges of the shingles.
Once under the shingles, the water is free to leak into the ceilings and walls.
Depending whether it’s a quick thaw in the middle of winter or during the spring melt, if you keep the snow and ice load to a minimum you most likely will avoid water intrusion problems.