What does the process of "cutting the points" help prevent?

The process of "cutting the points" is a technique used in roofing to help manage water flow over shingles. Specifically, this process involves creating a slight slope at the top edge of the shingles where they meet in order to direct water away from the edges and prevent it from running parallel along the top. This is crucial because if water runs along the top edges, it can eventually seep under the shingles, leading to leaks and potential water damage within the roofing system and the underlying structure of the building.

Successful implementation of this technique ensures that water is properly guided down the roof slope, enhancing the overall drainage and helping to maintain the integrity of the roofing system over time. This is particularly important in roofing applications where excess water can lead to serious structural issues and increased maintenance costs.