When the standing seam clips are attached directly to framing, sometimes strong, gusting winds can build up enough pressure on the roof panels to cause noise. The noise is ultimately created by a cantilevered fastener plain and simple.”Īnother scenario in which sounds can be a factor is buildings with standing seam roofs that transition from conditioned spaces with insulation between the purlins to unconditioned spaces without insulation, for example in additions of open or enclosed storage spaces. The reason helps mitigate the noise is because you’re not cantilevering the fastener. “You create kind of a sheer or a torque on that fastener, and, in that case, that’s where you find the popping noise. “So now that little click or popping noise that you can barely hear up on the roof becomes quite loud if the metal deck is open in the building.”Īlso, Lisa Reimert, staff engineer at San Antonio-based Berridge Manufacturing Co., who describes the expansion/contraction noise like an empty water bottle being crinkled, says the reason sounds are sometimes amplified in the standing seam/rigid board insulation/metal decking assemblies is because the fasteners cantilever from standing seam clips through rigid board insulation to metal decking, without plywood, Z-furring or another substrate.
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“When that clip pops, that vibration gets transferred through that screw down to the metal deck, and that metal deck acts kind of like a drum skin it amplifies it,” Buchinger says. The reason sounds can be amplified in the standing seam/rigid board insulation/metal decking assembly is the clips holding the standing seam roof down are fastened to the metal decking with long screws. When it kind of jumps, it makes a vibration, a popping noise, like when you hear your car engine cooling off.” A certain amount of force will build up, and then either the clip top will move on the base, or the panel will move in the clip top, depending on the design.
Ken Buchinger, roof inspector at Houston-based MBCI and vice chairman of the Metal Construction Association’s roofing council, says, “As the panel expands and contracts, you’ve got movement, but it’s not a nice, clean, smooth movement.
Sounds can be amplified by friction between the components in assemblies with standing seam roof panels, rigid board insulation and metal decking. In rare cases, in one particular roof assembly with standing seam panels, the expansion/contraction sounds can become louder inside a building. The sounds are typically only audible if you’re on or near the roof, or if the underside of the metal decking is exposed to finished interior space. More specifically, standing seam roofs are different from other roof types in that, as they expand and contract with temperature changes, friction between metal components as they rub against each other can produce faint popping sounds. In the rare cases when sounds are disruptive, understanding what causes them, and in what circumstances are they more and less likely to occur, can help determine how they can be anticipated, avoided and eliminated.
Most of the time, sounds from weather and movement on standing seam metal roofs are no more audible than sounds on other types of roofs, and don’t disturb people.