What is the purpose of anchor bolts in roofing construction?

Anchor bolts play a crucial role in roofing construction by anchoring wooden sill plates to concrete or masonry. This ensures a solid foundation for the structure above, as the connection between the sill plate and the concrete or masonry allows for the distribution of loads. By securing the sill plate effectively, anchor bolts help to stabilize the entire roof system, contributing to its overall integrity and preventing movement or misalignment that could lead to structural issues over time.

The other options, while related to different aspects of roofing and construction, do not accurately define the specific purpose of anchor bolts. For example, securing roofing shingles involves different fastening methods and materials designed specifically for attaching shingles. Similarly, connecting roof rafters involves various types of connectors, but is not the role of anchor bolts. Lastly, providing insulation is a completely separate function that relates to thermal performance rather than structural integrity. Thus, option B clearly identifies the fundamental purpose of anchor bolts in the context of roofing construction.