What is the minimum thickness required for valley flashing?

The correct choice regarding the minimum thickness required for valley flashing is determined by building codes and industry standards that aim to ensure durability and performance in roofing systems. In this case, a thickness of No. 26 gauge provides an appropriate balance between strength and weight for use in valleys, which are critical areas where two roof slopes meet. Valley flashing must be thick enough to withstand the stresses of weather conditions, such as wind uplift, while also being resistant to corrosion over time.

In roofing applications, particularly in North Carolina, it is essential to use materials that conform to local building codes that mandate minimum standards for flashing materials to prevent leaks and structural damage. No. 26 gauge is recognized in many guidelines as sufficient to provide long-term performance in various environmental conditions without being excessively heavy or unwieldy during installation.