C Purlins Roof Framing

Purlins are installed horizontally under metal roofs.

C purlins roof framing.

Hat channels can also be used as a purlin where a lower profile is required or where the cover system requires closer purlin spacing thus making standard z or c purlins overly expensive. They give added support to the roof and also provide a nailing surface for the end panels and drip edge. What can c purlins be used for. C section purlins or cee section purlins are designed to form the walls and floor joists of a building shell structure making them also ideal for supporting beams needed for mezzanine flooring.

The shape of cee purlins does not allow end lapping they are butted together. As long the structure has a roof frame c purlins are present. Metal c purlins are light in weight and perfect for simple span construction. This took time to pull and al.

They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. Why are c purlins so popular. Purlins are 2 by 4 feet and are installed much like metal roofing. They just vary from the type of material wood or steel thickness and length.

In some instances either 6 or 8 c purlins back to back can be used as rafters. Galvanized cee purlins in steel construction the term purlin typically refers to roof framing members that span parallel to the building eave and support the roof decking or sheeting. The usage of c purlins can range from different type of structures residential commercial or agricultural. The steel purlins are in turn supported by rafters or walls.

These purlins are extensively used in larger roofing platforms factory workshops and many industrial sheds. Cee purlins are secondary steel framing members most commonly used as roof purlins wall girts and header jamb and sill for windows and doors on metal buildings. Here are some examples of their application. Welded together they can be used as columns braces and ties.

In this episode we have added a scissor lift.