A spray polyurethane foam roof serviced the Superdome from 1974-2000 without experiencing any leaks or blow offs. Bowing to political pressure from local roofing interests, the roof was partially removed and replaced with a EDPM rubber roof. During Hurricane Katrina the EDPM roof failed. Repairs were accomplished in summer of 2007 with polyurethane foam roof.
According to Danny Vincens, Vice President of Engineering at the Louisiana Superdome, "The performance of our urethane roof has been quite remarkable. It is lightweight and maintains easily. We have had less problems overall with the urethane roof than other roofs on site."
website - Superdome Roof Repair Project