Construction paper, computer paper, and aluminum foil.which has the most airresistance and why
First you must free the downspouts on the gutter system then free gutters put calcium or salt in the gutters If the ice dam is causing a leak you might want to get a price on installing ice shieldthat depends on the condof the roof.There also is a heating element that (1) can be installed to the roof eve edge and (2) that can be installed to the gutter, downspout.
Do not try to chip or break the ice offUse an ice melting product and make sure the water has some place to goNext, you must make sure you have proper eave to attic ventilationThis can be achieved by using insulation baffles from the soffit area to above the height of the insulationThis will allow cool air to pass across the bottom of the roof sheathing and not allowing the warmth to get to the roof board.
I assume you mean that if a 1 square inch of material is positioned perpendicular to a defined air flow, will the force on different materials be differentFor the three materials you listed the force would be virtually the same.
