Tile roof systems should be applied over what material?

Tile roof systems are ideally installed over continuous wood decking because this type of decking provides a solid and stable substrate for the tile. The continuous surface helps to evenly distribute the weight of the tiles, which is essential since they can be quite heavy. Additionally, wood decking helps to accommodate the slight movement that may occur due to thermal expansion and contraction, ensuring that the tiles remain secure and undamaged over time.

Using continuous wood decking also allows for proper ventilation underneath the tiles, which is vital for preventing moisture buildup that could lead to issues such as mold or rot. This optimal balance of stability, weight distribution, and ventilation makes wood decking the best choice for tile roof systems.

Other materials such as metal decking, asphalt shingles, or foam board insulation may not provide the necessary support and ventilation for tile roofs, leading to potential problems in performance and durability.