Roof Purlin Material

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

Roof purlin material.

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 purlins. These structural supports run perpendicular across the rafter beams.

Purlins are an important component in a pre engineered steel structural kit. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. Engineered purlin metal mart offers a complete line of engineered 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.

The purlins of a roof support the weight of the roof deck. When made of wood it is usually covered with some sort of weatherproofing and sometimes an insulation material. Several kinds of purlins exist. 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. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. Do all roofing projects require purlins.