Steel Batten Sizes

This is a specification guide to steel batten sizes: the cross-section, gauge and spacing that make a roof substructure safe, flat and economical. It explains how batten size is derived from rafter spacing, roofing load and sheet span, and presents the standard commercial sizes with their load/span limits. With this document, a buyer can state the correct size on the first inquiry, avoid both over-specification (wasted steel and cost) and under-specification (sagging or failed fixing), and speed up every quotation.

Because sizes vary in one order, each bundle is separated by size and labeled with a tag stating section, wall, length and quantity; bundles are strapped, PE-wrapped and crated for mixed loads. We also provide a size/quantity manifest so the customs and site team can verify at a glance. Delivery 10-20 days depending on mix.

A complete size matrix that maps section, wall and span to one clear table; load ratings derived from standard engineering practice rather than guesswork; coating grades matched to exposure; cut-to-length for every line item; and free substitution advice when a specified size is out of stock.

The guide removes the most common sourcing error - choosing a batten by visual comparison instead of by load. Because sizes are standardized, you can combine multiple lines in one container and negotiate better freight. Wall thickness and span tables also let you reduce steel weight where the roof permits, cutting cost without compromising safety.

The size guide applies to every batten-supported roof: concrete or clay tile roofing, metal tile sheets, corrugated roofing, composite panels and cold-roof ventilated systems. It is equally used by timber-frame builders, steel structure contractors and self-build homeowners to order the right profile the first time.

Beyond roofs, the same size logic serves wall battening for rainscreen cladding, ceiling hat channels, floor joist bridging, and timber-deck support in garden structures - anywhere a light steel section carries a distributed load across supports.