Ice dams pose a significant risk for homeowners across the United States and Canada, especially during the winter months. These formations occur when snow on your roof melts due to heat escaping from the home, and the resulting water flows down to the roof’s edge. When this water reaches the colder eaves, it refreezes, creating a dam of ice. This dam prevents further melting water from draining off the roof, leading to the accumulation of water behind the ice. This trapped water can seep under roofing materials, causing leaks, water damage, and potentially leading to expensive repairs. To mitigate this issue, adding spray foam insulation in the attic can help reduce heat loss and keep the roof colder, minimizing the risk of ice dams forming in the first place.
For more: https://sprayfoamgeniusmarketing.com/how-spray-foam-insulation-can-help-with-ice-dam-prevention/
