Start your first batten 20mm from the end of your rafter or wall plate.Allow you sheet to run into the center line of the gutter as shown (Fig 4). The second batten will be 367mm less the over hang into the gutter.
From the second batten up the roof, the battens are fixed at 367mm centers up until the last module which maybe off module. Tiles are modular so the dimension is from front of batten to front of the next batten or back of batten to back of batten. Each tile takes 4 fixings as per (Fig 3).
Dimensions and batten requirements:
Overall length 1470mm
Overall Depth: 412mm
Batten Size: 50x25mm (spans up to 600mm)
Batten Spacing: 367mm (second batten off module Fig 4)
Battens required: 2.73lm/m2