Understanding Ice Dams and the Impact on Your Home

With one of the toughest winters we’ve had in several years, we wanted to address a concern that some homeowners have been facing this season: water intrusion caused by ice dams.

Anatomy of an Ice Dam

Ice dams form when snow on your roof melts due to heat escaping from the attic or roof cavity.  The melted water flows down to colder areas near the eaves, where it refreezes and creates a barrier.  This ice buildup prevents additional melting snow from draining properly, causing water to pool and potentially seep under shingles and into your home.

It’s important to clarify that water intrusion caused by ice dams is NOT related to the performance of newly installed windows or eavestroughs.  The root cause lies in the ice dam itself, which forces water to back up under the roof shingles and into the structure.

To mitigate ice damming, we recommend the following:

  1. Ensuring proper attic insulation and ventilation to prevent uneven roof temperatures.
  2. Removing excess snow from your roof safely after heavy snowfall.  If you see a large area of icicles, this is a prime indicator of a potential ice dam situation.
  3. Considering professional ice dam prevention services if your home is prone to this issue (heating cables installed on the roof could be an option).

One trick we’ve learned over the years is filling a nylon stocking with ice melt and laying it over the eaves and up the roof, creating a space for water to flow out.

If you have any questions, or need further assistance, please don’t hesitate to contact our office.  We’re here to help protect your home during every season.

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