Boston Logan International Airport’s new, 10-story West Garage Extension features an attractive, kinetic exterior to distinctively screen the facility. Designed by Arrowstreet Inc. and manufactured by EXTECH, the dynamic façade system consists of more than 48,000 aluminum flapper panels that move in response to wind currents. Each flapper panel was finished by Linetec in Class I clear anodize.

The 6-inch square curved flapper panels are set within 353 extruded aluminum framing support assemblies that span eight stories high by 290 feet wide. Subjected to 130 mile per hour winds to test system resiliency, the system’s anodize finish also contributes to its durability. Class I coating is a high-performance anodic finish used primarily for exterior building products and other products that must withstand continuous outdoor exposure.

“Anodizing successfully combines science with nature to create one of the world's best metal finishes. Because it is an integral part of the substrate, the anodic coating provides excellent wear and abrasion resistance with minimal maintenance,” describes Linetec’s senior marketing specialist, Tammy Schroeder, LEED Green Associate.

She adds, “Choosing clear anodize to create the unique façade for Logan Airport’s West Garage Extension not only contributes to its lasting performance, but also accentuates the intended sense of movement as the light reflects off the aluminum flapper panels that seem to dance in the wind.”

“Various shapes, material thickness and finishes were tested, resulting in the curved anodized aluminum pieces that reflect light and ripple with the breeze,” noted David Bois, principal at Arrowstreet. “Our partnership with EXTECH allowed us to develop and fabricate a system for the facade that would have been difficult – if not impossible – without their collaboration.” 

Before finalizing the façade design, EXTECH provided Arrowstreet with several mock-ups for the Massachusetts Port Authority’s (Massport’s) review and approval. The self-supporting Massport owns and operates Boston Logan International Airport, and receives no state tax money to support its operations or facilities. In the last decade, Massport and its airline partners have invested more than $4.4 billion to build a new runway, roadways, terminals, taxiways and garages.