Established in 1905, the Pennsylvania State Police (PSP) was the first uniformed police organization of its kind in the nation. However, it wasn’t until Sept. 12, 1978, when the department was given its own building in Harrisburg, Pa. Forty years later, the three-story, 190,000-square-foot limestone and brick-clad, steel-framed Pennsylvania State Police Department Headquarters was showing its age.
New aluminum skin updates state police headquarters’ overall aesthetic
Photo: Brett Younger (IMETCO)
Façade Issues
The worst issue was leaking windows that allowed water inside the cavity wall, compromising the steel anchoring clips that supported the limestone panels, according to Chris Dardis, architect and project designer at VITETTA Architects and Engineers, Lemoyne, Pa. As he explains, the potential for structural failure was real and understandably the PSP’s primary concern was safety. “The first goal was to fix all the façade issues and weatherize the entire building with a new roof, all new windows, rip all of the limestone panels off the building and replace with a new material to be determined during design. The second goal was to update the aesthetics and image of PSP Headquarters building to the extent possible while focusing on the façade repairs and weatherization work.”
To assess the extent of damage to the steel limestone clips, VITETTA performed forensic work. They determined that only the head sections of the limestone panels needed to be removed. This was just a fraction of the overall quantity of limestone, meaning that the majority of limestone could remain.
“This was a tremendous cost savings and it allowed us to focus on both the weatherization and a complete aesthetic make-over of the building and still stay within budget,” Dardis says. “Our approach quickly settled on a new aluminum metal skin to cover the entire building because it provided the best opportunity to update the overall esthetic and reshape the image of the PSP Headquarters, while addressing all the existing water infiltration and resultant façade issues.”
Photo: Brett Younger (IMETCO)
Custom Panels
The existing building had three stories of stacked ribbon windows and limestone panels with brick bookends at all the corners. “We wanted to totally change those proportions and reinvent the rhythm of the building,” Dardis says, “so even if you knew what the building looked like before, you’d be hard-pressed not to believe it was a brand-new building after the renovation.”
Aluminum was chosen for its flexibility, ability to not rust, lightweight, profile and color options, as well as its longevity and relatively low cost, making it a perfect fit for reskinning the large building. The VITETTA design team worked with the engineering team at Norcross, Ga.-based IMETCO (Innovative Metals Co. Inc.) to develop 8-, 12- and 16-inch-high Latitude profiles.
For the project, IMETCO supplied a custom profile of its 0.063-inch aluminum Latitude Concealed Fastener wall panels in three widths, as well as 0.08-inch aluminum custom window trim and metal coping. A total of 20,000 square feet of products were finished in Minneapolis-based Sherwin-Williams Coil Coatings’ Charcoal Gray and Preweathered Galvalume Fluropon coating.
To install the panels, a composite 4-inch insulated plywood panel was directly anchored to the existing masonry and the Latitude panel clips were anchored through an air barrier directly to the 3/4-inch plywood.
Photo: Brett Younger (IMETCO)
Branding Refresh
The designers used a linear aesthetic composed of randomly mixed-height panels that moved across each façade and seamlessly turned the corners to create a sense of movement and a whole new look for the building. “The new profile has a small triangular projection at the end which creates a subtle shadow line and provides depth and texture,” says Dardis.
Additionally, the police department had recently gone through vehicle color upgrades as part of a branding refresh. “The entire team wanted the building aesthetic to be sympathetic to this effort and the use of these two colors together does that, plus it creates movement, our interpretation of driving on the highway with the dividing lines passing by at speed,” Dardis notes.
The VITETTA team worked directly with IMETCO’s designers and detailers during the design to make sure the systems would not only look great but would work and install easily. “The biggest challenge during design was detailing how the Latitude panels terminate at the existing openings,” Dardis explains. “Special termination flashing channels had to be developed with IMETCO for each type of opening to ensure proper weathertightness.”