Quote:
Originally Posted by alnorth
A brand-new roof is not going to prevent an ice dam, shingles aren't meant to stop water that is pooling and can't flow down.
You have to prevent the water from forming by making sure your attic isn't warm when you have a lot of ice and snow up there.
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I realize a new roof wouldn't stop a dam from forming. I guess I mean should it help prevent the ice/water from doing damage. These aren't wood shingles, they are 50-year GAF Timberline and they seemed pretty impenetrable. It seemed like it should keep water from penetrating and getting underneath.