Purlin Hex Roof

The purlin is adjusted into line and the 12mm diameter hex flange bolts on the brace tightened.

Purlin hex roof.

As structural members they resist loads. Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. The jm purlin fastener is a steel coated fastener with a hex head and 19 mm drill point.

There is a chance of damaging roofing sheets if you are failed to do so. Where the end purlin spacing is less than 800mm an adjustable end brace with a bolted end cleat is available as twisting of the end cleat is not practical. 20 mm drill point allows the fastener to be drilled through the purlin before the threads engage into the standing seam metal roof. The width of metal panels will determine the rafter spacing.

Snap a chalk line horizontally across the roof two feet down from the top. They are available in a range of lengths from 3m to 12m with longer lengths available by special manufacture. Fasten the purlin with 16d common nails into each vertical rafter. The roof support system is a ridgepole and either rafters which run perpendicular from the top of the walls to the ridge or purlins which run parallel to the ridge.

Lay the first purlin at the ridge of the roof down to the chalk line beginning at either corner. In the past the majority of roof structures were of wooden construction but over the past 15 to 20 years there has been a vast shift away from wood to metal mainly steel roof construction. Roof purlin are members used to directly support roof sheeting materials and could be made of timber or steel. The adjustable brace offers up to 20mm of adjustment.

The metal roof purlins spacing must be done correctly within narrow tolerances. Do all roofing projects require purlins. The wider the roofing panels the greater spacing distance you should put. E purlin offers the greatest flexibility in the design of stick roofs clad with tile or metal sheeting.

Purlins traditionally support the roof deck cladding sheeting and are in turn supported by the principal rafters steel beams etc. A common arrangement is a rafter and purlin system which combines purlins and rafters. Low profile hex head has a smooth surface to ensure that there is no damage to the membrane. Insert two equally spaced nails into the rafter.

2 8 mm in seconds. In timber construction purlins are nailed to the rafter or supporting trusses while in steel roof construction they are welded or bolted to the rafters or trusses by the means of cleats.