A Special Building Envelope for the Special Forces: Cannon Air Force Base’s New Facility Utilizes Metal Panels
U.S. Army Special Operations Forces commissioned the Corp of Engineers to design and construct a new hangar and aircraft maintenance facility at Cannon Air Force Base in Curry County, N.M. The total scope of this project included the construction of a high-bay aircraft maintenance hangar with an associated aircraft maintenance unit, complete with water-storage tanks, a pump house and an aircraft-parts storage warehouse. Construction work had to be completed quickly and without interference to an existing and active airfield.
The Kingspan KingZip™ Standing Seam Insulated Metal Roofing Panels and 300 Azteco Insulated Metal Panels (IMPs) were specified by the project architect, the U.S. Army Corp of Engineers, to match other hangars adjacent to the project on the recommendation of Consolidated Metal Builders. CMB was the building-envelope subcontractor on this project for the general contractor, Hensel Phelps Construction of Phoenix. Ric Justus, CEO of Consolidated Metal Builders, said that his company had become familiar with Kingspan products during previous design-build hangar projects at Cannon AFB. To construct the roof and walls, the project utilized 120,000 square feet of Kingspan panels.
Roof Requirements Readied
According to Justus, there were specific reasons why KingZipmetal roofing panels were selected for the roof conversion project of the hangar. “The KingZip panels were chosen as a value-engineering option after the job was awarded,” he said. “They substituted for an underlayment, rigid board insulation stack and single-skin standing seam roof.”
Justus also noted another prime reason for recommending KingZip. “It allowed us to perform a quicker and safer installation of the roof system on this airfield project in cold, windy winter conditions,” he said.
On the hangar, which peaks at 80 feet tall and over 30 feet in width, the simple saver insulation system would have to be installed from the underside with many 80-foot boom lifts. The single-skin standing seam would have to be coordinated to be installed at the same time as insulation. That would be a very slow process and risky in the weather conditions at the time. “Kingzip gave us the best substitute because it is a sandwiched ‘all-in-one’ system to install the roof from above with minor equipment below for the joints,” said Justus. “The insulation value of the panel was equivalent or better with the 4-inch standing seam system. Costs of the materials were higher, however the installation costs were much lower, especially if you take into consideration the reduced chance of weather delays, inside equipment coordination with other work, and daily getting started and stopping each day.”
Approximately 28,000 square feet of KingZip red panels were installed for the lower roof, and 42,000 square feet of KingZip white panels were installed for the upper roof. Justus described the unique design features that challenged Consolidated Metal Builders on this project. “We had two roof colors and one was visible that needed to match a neighboring identical building being built at the same time,” he recalled. “We used a single skin of the KingZip product for a fascia panel, which hadn’t been done previously.”
The KingZip metal roofing panel is manufactured with energy efficiency, durability and low maintenance in mind. With a KingZip metal roofing system, the building owner can enjoy energy- and cost-cutting savings of as much as 30 percent over standard cavity-based insulation systems. The savings come with a high R-value, thermal performance of superior airtightness, and low thermal bridging. This eco-friendly metal roof panel contains a substantial amount of recycled content on the exterior skins, and the panels themselves are recyclable. These panels are also designed to lower a building’s operational energy demands (primarily heating and cooling), and as a result, reduce the carbon footprint of the Special Forces Hangar at Cannon Air Force Base.
Another benefit of KingZip metal roofing panels is that they are rigorously tested to ensure they remain both air and weathertight over the service life of the building. This added effectiveness helps fight air leakage, which is one of the biggest sources of building heat loss (or heat gain). KingZip roofing panels provide an exterior weather barrier, high efficiency insulation core and an integral vapor barrier. In addition to the construction and energy savings, designers will appreciate the array of color and finishing options provided by KingZip.
Walls and All
The old saying, “time is money,” is so true when it comes to the performance benefits of an insulated metal roof and wall. Kingspan’s one-step installation can reduce onsite installation time by up to 50 percent compared to traditional multi-part insulated metal panels systems. This reduces multiple labor steps required with other roof and wall systems down to a single operation.
Approximately 50,000 square feet of Kingspan 300 Azteco insulated metal panels were specified for the wall of the Cannon AFB hangar. This type of IMP can be used in a multitude of building designs. When utilizing this single-component insulated metal panel product, construction delays are minimized. Much like the KingZip roof panels, the Kingspan 300 Azteco insulated metal panels provide high R-value thermal performance, excellent airtightness and low thermal bridging. The 300 Series panel also offers that desired intangible factor by giving a building an impressive look.
According to Justus, the three primary benefits of specifying Kingspan products were a safer and quicker installation, a high R-value with less thickness of roof stack and less layers of product to handle onsite. Justus said he thinks KingZip roof panels and Kingspan insulated metal panels will continue to become a more standard cladding material on commercial buildings in the Southwest. “We believe, based on the last five years of building projects here at CAFB, that KingZip has great potential in this area,” he said. “All the customers, designers and contractors I know just love these products.
For the Special Forces hangar at Cannon Air Force Base, KingZip standing seam insulated metal roofing panels and 300 Azteco IMPs provided the best way to update and enhance an existing building. Today, U.S. Special Forces has an impressive mission-capable facility at Cannon Air Force Base.
For more information, visit www.kingspanpanels.com.