1.   A. The white rubbery strip will not prevent ice dams but rather should prevent dammed water from backing up under the shingles and into the house.

2.   Homeowners in heavy-snow states like Vermont have long used devices to prevent ice dams altogether.

3.   Keeping your gutters clean and flowing freely can also help prevent ice dams.

4.   Such a shield will not prevent ice dams.

5.   The air space between the metal roof and the old roof may stay cold enough to prevent ice dams, even though there is no air flow.

6.   The best way to prevent ice dams, Keefe said, is to keep the roof uniformly cold with proper insulation.

7.   The roof is probably cold enough in winter to prevent ice dams, but you might get it a little colder by taking down the beaverboard.

8.   This moving air cools the attic in the summer and helps to prevent ice dams in the winter.

9.   When you reroof is a good time to install a ridge vent, a good thing to help prevent ice dams.

10.   While this does not prevent ice dams, it does prevent dammed water from backing up under the shingles and into the attic and house.