Final answer:
The top leg of a drip edge should overlap the roof by at least 2 inches to ensure proper water runoff and prevent water damage.
Step-by-step explanation:
The top leg of a drip edge must overlap the roof by at least a minimum of 2 inches. This is necessary to ensure proper water runoff and to prevent water from getting underneath the roofing material, which could cause damage to the roof structure. When installing a drip edge, it's essential to follow this guideline along with any other specific building codes or manufacturer recommendations for the particular materials you are using.
The top leg of a drip edge must overlap the roof by at least a minimum of 2 inches. This overlap is crucial for ensuring proper water shedding and preventing water from seeping under the roofing materials, which could potentially cause damage to the roof structure or the interior of the home. The 2-inch overlap is a common standard in the construction industry, providing a balance between sufficient coverage and material efficiency.