Bridging and "nesting" refer to methods of what?

Bridging and "nesting" are techniques specifically relevant in the context of roofing. When installing metric shingles, bridging refers to a method used to create a better fit and alignment between the metric shingles and standard shingles, which may have different sizing and dimensions. Nesting, on the other hand, involves overlapping shingles in a way that allows for both effective coverage and aesthetic appeal. This method ensures that the roofing system maintains its integrity while accommodating the dimensional differences between metric and standard materials.

In this context, it's essential to note how roofing systems often require specific approaches for different materials. Understanding the principles of bridging and nesting helps ensure that roofers can efficiently work with a variety of shingle types, which might not align perfectly due to differing measurement systems. Thus, this combination of techniques enhances the overall quality of the installation, helping to avoid potential issues such as leaks or misalignment.