What is the main role of a corner board in siding installation?

The main role of a corner board in siding installation is to strengthen the corners of the structure. Corner boards are vertical pieces that are installed at the outside corners of the building, helping to provide structural reinforcement. They serve not only as a decorative element but also help to protect the edges of the siding from damage due to impacts, such as from lawn equipment or weather-related wear and tear.

By properly installing corner boards, builders can ensure that the corners of the building are durable and able to withstand various stresses, which is particularly important in maintaining the overall integrity of the structure over time. Additionally, they assist in achieving a defined transition between different sections of siding, but their primary function concerns enhancing the structural robustness rather than purely aesthetic or other functional aspects.