CopperPlus, a copper-clad stainless steel ASTM B 506-09 roofing material supplied by Heyco Metals of Reading, PA, has been selected to replace the historic, copper roof at Lambert-St. Louis International Airport in a $6.7 million project.
CopperPlus features two outer layers of 100 percent copper metallurgically bonded to a core of Type 430 stainless steel. The resulting product offers the increased strength and reduced thermal properties of stainless steel with the beauty and patination properties of solid copper. According to Airport officials, 102,000 sq. ft. of CopperPlus will be installed on four domed vaults in phases over approximately 10 months.
“The new skin will shine of raw copper like it did in the mid-1950s when the terminal was built,” said St. Louis Mayor Francis. “The roof will slowly transform in color again with time as this Airport serves new generations in this region.”
According to Jerry Beckmann, Deputy Airport Director of Planning & Development, the 60-year-old roof sustained heavy damage during an EF4 tornado strike in 2011. Deciding it was more economical to replace the aging roof rather than repair it, the Airport issued a public Request for Qualifications.
“As an engineer, I wanted to make sure the replacement material would be watertight and hold up well in storm events,” said Beckmann. “The Airport directors were concerned about maintaining the historic architectural integrity of the roof. I did some investigating, and liked what I heard about the copper-clad material. It looks identical to solid copper, but doesn’t expand and contract as much in the heat, and has better soldering characteristics.”