Which of the following is NOT a factor in determining the spacing of battens?

The spacing of battens in roofing installation is influenced by various factors that are essential for ensuring proper structural integrity and effectiveness of the roofing system. The color of the tiles is not a relevant consideration when determining how battens should be spaced.

Color may affect the heat absorption properties of the roof and could have some impact on aesthetic choices; however, it does not play a role in the mechanics of support or the physical installation process itself. In contrast, the type of roofing material, tile exposure, and weather patterns are critical elements. The type of roofing material dictates the load factors, while tile exposure relates to how the tiles interact with elements and determine necessary coverage. Weather patterns influence designs to ensure roofs withstand local climate challenges.

Thus, the correct answer highlights that color is a secondary, aesthetic factor rather than a structural necessity in the context of batten spacing.