Batten

Battens are the final structural layer of the roof frame before the covering is installed. On tile roofs, timber battens (typically 50x25mm or 38x25mm treated pine) are nailed across the rafters or trusses at spacings that correspond to the tile profile's gauge length — the exposed portion of each tile course. On metal roofs, battens serve the same function as purlins for lighter sheeting profiles and are sometimes called "top-hat battens" when made from formed steel. The quality and condition of roof battens directly affects the performance of the roof covering. Battens must be straight, properly spaced, and securely fixed to the underlying structure. On tile roofs, incorrect batten spacing causes tiles to sit improperly, creating gaps that allow water and wind to penetrate. Warped or split battens can cause tiles to rock, leading to cracking under foot traffic or wind pressure. In Gippsland, batten condition is a key concern during roof restoration and replacement. On older tile roofs, the battens may have been installed using untreated softwood that has deteriorated over 30-50 years of service. During a tile-to-tin conversion, the old tile battens are removed and new purlins are installed at the appropriate spacing for the metal profile. Town & Country Roofing always inspects and replaces damaged battens as part of any roof restoration or replacement project.