Purlins provide horizontal support for the sheets and form part of the framework for the building. Minimum recommended purlin size is 4”x 2” (50mm x 100mm) in timber or Z140mm x 1.6mm in steel*. All purlin joints must be supported by a rafter. Z Purlins are connected to the rafters using cleats.
* Minimum purlin size will vary according to span. Timber Tek screws should not be used on anything smaller than a 2" x 2" timber support as the aggressive thread may split smaller timbers
Box profile and traditional 3" corrugated
**Maximum purlin spaces are not suitable in all scenarios. You will need to consult a structural engineer to see if these will be appropriate to your building.
*** Flow-tile can be manufactured with 450mm tile lengths in 0.7mm gauge as a special order. Please call our sales team to discuss this option.
Company InfoAccord Steel Cladding Ltd
Tel: 01384 273811
Fax: 01384 277399
VAT Reg 929 2931 94
Registered in England and Wales 06763899