The best drip edge to use depends on your local climate, budget, and roofing material, but heavy-gauge aluminum or hot-dipped galvanized steel profiles with a minimum thickness of 0.024 inches are widely considered industry standards. Aluminum is exceptional for coastal or wet environments because it never rusts, while heavy-gauge steel provides superior rigidity against high winds and heavy snow loads. Choosing an extended flange or "D-style" profile also ensures superior water diversion away from the fascia.
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