Popular Purlin Designs

I wasn’t very popular in High School. Maybe because I went around asking girls about their favorite purlin design. That pick-up line never worked. But, where purlins are un-popular with teenage girls, they are very popular with building engineers, architects, and others with a kindred spirit for steel building construction. We all know that there are various types of purlin designs. But, do you know the difference? We wanted to address this matter that may be unclear for some people. For the sake of brevity and time, (and sanity!) we will only address the two must popular.  (Please, hold your applause until the end.)

Standing Seam Steel Roofs

A favorite over other categories of roofs offered today are modern standing-seam roofs and their unique components. It has more advantages over the through-fastened structure roof that held its place as the industry benchmark. Proper sealing is usually put on at the building production facility and put in the seam furrow. A seaming tool forms in the field the high seams of the adjacent standing-seam panels and makes a finer roofing application counter to those that are tightened down and lapped together. To adjust for enlargement and contraction, some roof motion is allowed with roof panels that are secured to purlins with concealed fasteners.