How should valley linings be installed according to roofing guidelines?

The installation of valley linings according to roofing guidelines should be performed as per the manufacturer's instructions. This is essential because manufacturers often provide specific guidelines that take into account the materials used, the structural design, and the specific conditions of the installation site. Following these instructions ensures that the valley linings function effectively to manage water flow and prevent leaks, which is critical for the longevity and performance of the roof.

Adhering to the manufacturer's guidelines also helps to maintain any warranties that may be associated with the roofing materials. These instructions are typically based on extensive research and field testing, ensuring that the product will perform as intended under various conditions. Properly installed valley linings reduce the risk of water infiltration that can lead to damage over time, making it a crucial aspect of roofing construction and maintenance.