. A new roof was put on 5 years ago. Seems odd such a new roof would have ice dams.
The reason or answer can be more complicated. All goes back to how well the house was constructed. Ridge vents. Soffit vents. Cold air is supposed to go from bottom of roof to top and exit. This is supposed to prevent any melting caused by inside heat trying to exit the house. If enough heat gets to the inside roof then melting occurs outside causing ice, icicles, and ice dams. A replacement of roof shingles does not solve a ventilation issue. Ice and Water Shield or sometimes called bitchathane placed under new shingles does help. But a poorly ventilated or poorly insulated attic can still cause issues even with a new roof. The more peaks and valleys and dormers specially on the north side is a potential water/ice issue. Drive around in the winter time and view houses. Some will have icicles while others will have none.
Driveway
. Why is this important? Can you explain?
This is not a real important issue. But note that the plowed snow has to go somewhere. A paved driveway is best. Some here love the look of blue stone and some driveways are gravel. Any plow truck will cause havoc with loose stones in driveway - and also if you obtain a snow thrower - the stones will cause the snow thrower maintenance issues. And note placement of shrubs as plow can ruin shrubs with piled up snow. And if the home has garage doors - examine how the snow will be removed from in front of the garage doors.
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