What is a common purpose of a batten system with a tile or slate roofing system?

A batten system in tile or slate roofing serves multiple important functions, but its primary function is to strengthen the bond between the tiles or slate material and the underlying structure. The battens are horizontal strips that create a framework for the tiles or slates to be securely fastened. This system not only helps to hold the tiles or slates in place against wind uplift and other forces but also facilitates proper alignment during installation, ensuring that the roof covers the underlying materials adequately.

The presence of battens allows for greater flexibility in the placement of tiles or slates, providing a more uniform and stable surface. This is particularly important for maintaining the integrity of the roof over time, as it helps prevent shifting or loosening that can lead to leaks or structural issues.

While the batten system might have secondary benefits, such as assisting with water drainage by creating a small air gap that allows water to flow more freely, its main purpose is indeed to create stronger connections among the roofing materials, which enhances overall roof performance and longevity.