Metal Building Roof Purlins

A girt is a horizontal structural member in a framed wall that provides lateral support to the wall panel to resist wind loads.

Metal building roof purlins.

Purlins perform the same service for the roof panels. Girts and purlins may also be called sheeting rails. A commercial industrial panel that is widely used for metal buildings thru out the industry to cover walls. Hints the name pb for purlin bearing.

Metal building purlin spacing. The shape of cee purlins does not allow end lapping they are butted together. Purlins are 2 by 4 feet and are installed much like metal roofing. Metal roofs are often referred as tin roofs in the past because of the use of tin such as aluminum or stainless steel sheets as the materials.

They give added support to the roof and also provide a nailing surface for the end panels and drip edge. Metal roof purlins are installed horizontally under metal roofs. Used for roof and walls on metal buildings. Secondly purlins tie the rafters together stabilizing and strengthening the structure s rigid framing.

First the purlins support the roof. This panel is the same configuration as r panel with the exception of a longer leg on one side of the panel that bears down on the roof purlin. Girts and purlins are components of the secondary frame of a metal building. Metal building roof purlins provide three structural functions.

Compared to conventional roofing system it might be a bit pricier in terms of installation but also has longer durability to provide better value for the future. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. 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. Thirdly purlins add additional support between the spans of the individual framing bays.