How are battens typically installed across a roof?

Battens are typically installed horizontally across a roof. This installation method allows for proper alignment and support for roofing materials, such as shingles or metal panels, which are often laid in horizontal rows. The horizontal placement facilitates proper drainage of rainwater, as it takes advantage of gravity to direct water flow away from the roof structure. By installing battens horizontally, you create a stable framework that can accommodate the roofing material's overlap, improving both functionality and aesthetic appeal. This technique is especially effective in various roofing systems where the battens help to create air circulation, reducing moisture buildup underneath the roofing layers.