Rollforming Services' Tophat Purlins are a versatile, lightweight, economical and an easy-to-use product for roof purlins, wall girts, floor joists, and many other applications such as carports, fencing and racking.
Tophat Purlins are a versatile and an easy to use product, typically used as roof purlins and wall girts, in applications such as carports, fencing, racking, farm buildings, and light commercial sheds.
Ideal for spans from 3 to 7 metres, Tophat Purlins provide a lightweight and economical alternative to standard timber beams or steel C-purlins.
Tophat Purlins are rolled from G550 steel hot-dipped galvanised with coating weight of Z275
Tophat Purlins are manufactured from G550 steel hot-dipped galvanised with a coating weight of Z275. This gives good protection in most exposed internal environments, and for external use in moderate coastal environments. Z450 galvanised steel coating is also available upon request.
To ensure durability of product, please note the following:
Use 14 gauge Tek screws.
With the exception of the following:
Tophat Purlins must be kept dry during storage as water present between close stacked sections will cause premature corrosion. If they become wet, they should be separated and stacked openly to allow for ventilation to dry the surface.
Cutting is preferably done by shear or hacksaw. When using abrasive disc blades, care must be taken to ensure the flammable swarf produced does not affect other materials, and the burred edge should be cleaned off at the completion of cutting. Finish the cut end with a galv spray to add protection.
THF Flashing Plates are used where Tophat Purlins pass through internal or external wall linings and fire-rated wall linings. They provide a neat and tidy hole for fixing of the sheets, which would otherwise be hard to achieve. Lapped Tophat Purlins can also pass through the THF Flashing Plates. Made with AZ150 Steel, they can be spray painted to match cladding if required.