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Purlin Roof Systems

Our zed purlin product range consists of a fully compatible range of Z-section profiles made from cold rolled steel in depths ranging from 142mm to 342mm deep. In addition, our zed section purlins come with a wide range of compatible accessories and can be supplied for the majority of cladding types and designs.

voestalpine Metsec Z-section steel purlin profiles are manufactured from pre-hot dipped galvanised steel, Z275 coating and with a minimum yield strength of 450N/mm². Further information on all of the following zed purlin systems and their applications can be found in the Purlin Technical Manual which can be downloaded from our downlaod centre.


Heavy End Bay Purlin Roof System

For buildings with 5 bays or more and rafter spacings up to 15m, heavier gauge purlins are fitted in the end bays with lighter purlins fitted on internal bays. Penultimate rafter joints are fully sleeved in the same gauge material as the end bay purlins and are longer than the standard sleeve. Internal bays are sleeved at every joint with standard sleeves of the same gauge material as the inner bay purlins.

Sleeved Purlin Roof System

For buildings with 2 bays or more, where a heavy end bay system is precluded and rafter spacings up to 15m. Standard sleeves are fitted at all penultimate rafter connections and staggered on all internal bays.

Butt Purlin Roof System

This system can cater for odd bays and can be used in both inset and oversail applications.

Eaves Beams

voestalpine Metsec eaves beam is a purpose-designed profile for use as an eaves purlin, top sheeting rail and gutter support.

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Purlin Roof variations

Roof bracing requirement checklist