Roof Purlin Material

Several kinds of purlins exist.

Roof purlin material.

For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. The purlins of a roof support the weight of the roof deck. The roof deck is the wood panel ply board or metal sheeting that creates the surface of the roof. All about purlin span for metal roof.

The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. These structural supports run perpendicular across the rafter beams. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. They both can be combined well to make sure that the space below the roof.

Also known as sheeting rails purlins create the roofing members of the secondary framing of a steel building. Engineered purlin metal mart offers a complete line of engineered purlin material. The purpose of purlins. Purlins are an important component in a pre engineered steel structural kit.

Available in cee or zee shape red oxide primed or galvanized 16 14 or 12 gauge sizes from 4 up to 12 flange widths of 1 1 2 up to 4 cut to your specified lengths hole punching available load tables available for all material. When made of wood it is usually covered with some sort of weatherproofing and sometimes an insulation material. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.