Which method is most appropriate for installing eave edge metal on asphalt shingle roofs?

The most appropriate method for installing eave edge metal on asphalt shingle roofs involves extending the metal over the flange. This approach is crucial because the eave edge metal, often referred to as drip edge, plays a significant role in directing water runoff. By extending the metal over the flange, it ensures that any water running down the roof is directed into the gutter system rather than underneath the shingles, which could lead to leaks and damage.

Additionally, this method helps prevent moisture and debris from getting beneath the shingles at the eaves, significantly enhancing the roof's lifespan and performance. Proper installation techniques, including how the edge metal is positioned relative to the shingles, are essential for maintaining the integrity of the roofing system.