What is the minimum gauge of galvanized valley flashing?

The minimum gauge for galvanized valley flashing is 26 gauge. This standard is established to ensure that the valley flashing is durable and can withstand the elements, as it serves a critical role in directing water away from the structure and preventing water damage. Selecting a gauge that is too thin could lead to issues such as bending, warping, or corrosion over time, especially in harsh weather conditions. A 26 gauge provides a good balance of strength and flexibility, ensuring that it can effectively protect the valley area of the roof while being workable for installation. Proper gauge selection is crucial in roofing to maintain the integrity of the structure over its lifespan.