People: Design/build, KMR Enterprises, Ocean City
Products: Drexel Metals in Ivyland, Pa., manufactured and supplied DMC175, a 24-inch coil with 18-inch pan. The mall’s new metal roof is a Snap Lock panel that was rollformed onsite. The 0.040-gauge aluminum is coated with TRINAR from AkzoNobel in Columbus, Ohio. The coating contains 70 percent PVDF resin for durability, even in a harsh oceanfront environment. At the owner’s request, AkzoNobel created the custom color—wind surf blue—to match the previous metal roof system.
Fine points: The mall’s previous steel roof had become rusted and faded. In addition, there was evidence of coastal destruction. The re-roofing project was undertaken for aesthetic reasons, and also to address safety issues. Tear-off work began in November 2010, at the end of the summer boardwalk season. Working on the coast in the winter was one of several challenges. In addition, the deteriorated metal roof hid a modified bitumen roof and wood decking that also needed to be replaced. Every layer showed signs of damage and the entire roof structure had a bounce factor that needed to be corrected. In the end, the 20-plus-member crew installed a new 5/8-inch plywood deck, re-installed the framing and adjusted roof pitches to correct areas of ponded water. The addition of new plywood, along with 2-inch by 6-inch stiffeners and thousands of fasteners, eliminated the deflection issues.