Friday, January 16, 2015

New Hampshire Homewners, Is Your Roof Trying to Tell You Something?

Next time you're outside, take a look at your roof. Is there snow on it? If you can see where the rafters are by the snow melt pattern, then your house has a heat-loss problem. Or if the snow cover has obvious bare spots, that's a sign of trouble, too.

There are three common roof snow melt patterns:

  1. Bare spots. A bare spot in an otherwise snow-covered roof means that heat is leaking out in that location. That probably means you have a hole in your insulation, or that your insulation in that place is compromised in some way. You may even have a family of squirrels living in your attic.
  2. Melting between the rafters. If you can see lines of snow over your rafters, then your roof is under-insulated. It's okay if the snow slides off the roof, blows off or melts off with the heat of the sun. But if the snow is disappearing between the rafters and not on top of them, it's not the sun that's melting it. You're paying to heat the sky.
  3. Melting on top of the rafters. If you see snow everywhere except on your rafters, then you have a problem called thermal bridging. Thermal bridging occurs when heat conducts out through solid material. Your roof may have plenty of insulation between the rafters, but if the rafters themselves are conducting enough heat to melt snow, your insulation's not doing you a lot of good.
If your roof shows any of these signs of heat loss, it's probably past time to call your contractor. Most homeowners find that the cost of the work is more than made up for in energy savings.

New Hampshire Construction

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