Purlin Spacing For Pvc Corrugated Roofing

For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet.

Purlin spacing for pvc corrugated roofing.

The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. Installing translucent plastic corrugated roof panels. Polycarbonate roofing installation guide ph. The overlaps ends and sides depends upon the sloop of the roof see below.

All purlin joints must be supported by a rafter. Minimum recommended purlin size is 4 x 2 50mm x 100mm in timber or z140mm x 1 6mm in steel. End purlins and periphery of roof to be fixed every 2nd crest. C3 fix side laps and miss 2 hit 1 miss 3 hit 1 miss 2 etc with approved fasteners alone.

In heavy snow areas 500 series or greater panels are recommended and closer spacing of purlins should be considered. In the valleys due to the angle typically produced at the valley and the use of transition flashing it is essential that the purlins are doubled in the valleys that is two purlins. You can use both types of corrugated roofing together creating panels that will allow light to come through as with a clear or white fiberglass corrugated panel known as a skylight. 08 9459 7402 email.

Note compliance with e2 as1 is dependent on purlin spacing and gauge of roofing. While panels may not fail under heavy snow loads strain at fastening points can cause slight cracking. Corrugations should run in a straight line between the highest and lowest points and at a right angle to the purlins the intermediate supports. Minimum purlin size will vary according to span.

08 9459 7133 fax. Corrugated sheet roofing material is widely available and easy to use. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. With approved fasteners alone.

Panel basics corrugated metal panels often called tin because in the past such panels were sometimes made of tin are typically steel or aluminum sheets that are used as a roofing material. Z purlins are connected to the rafters using cleats. End purlins and periphery of roof to be fixed every 2nd crest. When framing the roof the spacing for roof trusses should not exceed 24 inches 61 cm and purlins should not exceed 36 inches 91 cm apart.