Metal Roof Replacement

Metal Roof Replacement Provides Church With Long-Term Protection

by Laren Kowalczyk, The Garland Company, Inc.

From Architectural West Jul/Aug ’13

Every fall, Southern California residents brace themselves for the annual Santa Ana winds that blow through the region.  The strong, extremely dry offshore winds typically sustain 40 mph with gusts exceeding 70 mph.  This year, the Santa Ana windstorm was the worst southern California had seen in more than a decade with wind gusts as high as 100 mph.  The storm uprooted trees, downed power lines, and left the city of Pasadena in a state of emergency.  The uncharacteristically strong storm also ripped the metal roof off the First Church of Nazarene of Pasadena, leaving crumpled and twisted metal panels strewn all over the church’s Pasadena campus.  The church’s original roof, which was about 30 years old, had been leaking for several years and had already been suffering from wind uplift prior to the storm due to fastener failure.

         After the windstorm passed and the damaged metal panels were removed, Scott Anderson, the church’s executive pastor, immediately began looking into roof replacement options.  Familiar with The Garland Company, Inc., Anderson contacted local representative, Sean Magee, who had facilitated roofing repairs earlier that year, to survey the roof and provide recommendations for a roof replacement.  Aware of the problems the church experienced with its previous roof and of the high winds possible in the region, Magee recommended the industry’s strongest standing-seam metal roof system to guarantee watertight and windstorm protection.  In addition to finding a solution with the necessary strength and durability, Magee was also challenged with finding a metal system that preserved the aesthetic value of the church, which sits against the beautiful backdrop of the San Gabriel Mountains.  “The sheer strength of R-Mer® Span and its ability to withstand wind speeds up to and exceeding 110 mph provided the church with the peace of mind of knowing that they would have no future issues with leaking or any risk of the panels blowing off,” Magee reported.

         Magee, in collaboration with Garland engineering, recommended metal for the roof replacement as a high-performance material that provides the strength, durability, and functional diversity to accommodate the various changes in plane on the church’s 55,000 sq.ft. roof.  The eight-sided roof features 24-gauge, 18″ wide steel R-Mer Span structural standing seam panels that provide the industry’s highest wind-uplift rating, guaranteeing protection against the fierce Santa Ana winds.  The panels feature an isolated sealant design that protects the sealant from abrasion and shear forces, allowing the structure to retain the highest integrity against air and water infiltration.  The PVDF copper penny steel panels, varying in length from 1′ to 106′, were roll formed on site to provide continuous panels, guaranteeing leak-free performance.  Because the church’s wooden deck was not true to plane, 16-gauge hat channels were used in various locations throughout the roof to ensure that the roof panels lay evenly.  The deck also dictated the roof design with panels sloping upward to the penthouse-style walls, which extended 40′ from the roof deck.  Panels were installed vertically on the penthouse-style walls.

         Magee coordinated the project with Western States Roofing Company of Northridge, California, to ensure that the system was installed properly.  The church’s steep 7:12 slope contributed to a challenging installation process, which was controlled by a meticulous safety plan and diligent supervision.

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