Metal Building Roof Purlins

Thirdly purlins add additional support between the spans of the individual framing bays.

Metal building roof purlins.

Metal building purlin spacing. Girts and purlins may also be called sheeting rails. 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. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top.

Metal building roof purlins provide three structural functions. A commercial industrial panel that is widely used for metal buildings thru out the industry to cover walls. Welded together they can be used as columns braces and ties. Purlins perform the same service for the roof panels.

A girt is a horizontal structural member in a framed wall that provides lateral support to the wall panel to resist wind loads. Metal roof purlins are installed horizontally under metal roofs. 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. 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.

Secondly purlins tie the rafters together stabilizing and strengthening the structure s rigid framing. 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. First the purlins support the roof. Used for roof and walls on metal buildings.

Hints the name pb for purlin bearing. 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. Engineered purlin metal mart offers a complete line of engineered purlin material.