Roof Purlin Material

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.

Roof purlin material.

It is suitable to use for roof sheeting from fiber cement. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. When made of wood it is usually covered with some sort of weatherproofing and sometimes an insulation material.

Engineered purlin metal mart offers a complete line of engineered purlin material. 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. These structural supports run perpendicular across the rafter beams. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot.

The roof deck is the wood panel ply board or metal sheeting that creates the surface of the roof. They both can be combined well to make sure that the space below the roof. All about purlin span for metal roof. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.

The purlins of a roof support the weight of the roof deck. Also known as sheeting rails purlins create the roofing members of the secondary framing of a steel building. Several kinds of purlins exist.