In promotional brochures, a U.S. company boasted of the “stunning visual effect” its shimmering aluminum panels created in an NFL stadium, an Alaskan high school and a luxury hotel along Baltimore’s Inner Harbor that “soars 33 stories into the air.”
Those same panels — Reynobond composite material with a polyethylene core — also were used in the Grenfell Tower apartment building in London. British authorities say they’re investigating whether the panels helped spread the blaze that ripped across the building’s outer walls, killing at least 80 people.
The panels, also called cladding, accentuate a building’s appearance and also improve energy efficiency. But they are not recommended for use in buildings above 40 feet because they are combustible. In the wake of last month’s fire at the 24-story, 220-foot-high tower in London, Arconic Inc. announced it would no longer make the product available for high-rise buildings.
Determining which buildings might be…