What are the dimensions of the batten under my tile sheet roof?
When the roof truss interval is 900 or 1200 mm, a sufficient roofing batten material is a 32 x 100 mm timber batten or a ventilating steel batten. When using tile profile roofing sheets, the lowest roofing batten must be approx. 10 mm thicker than the standard batten e.g. 2 x (22 x 100 mm). To ensure the correct batten thickness, contact your structural designer.