There’s this saying that goes around in the construction world: “If it doesn’t move and it’s supposed to, use WD-40. If it moves and it’s not supposed to, use duct tape!” It’s a cute saying, and there is certainly truth behind it. However, there is one particular repair that duct tape should not be used for, and that’s your ducts!
We get it, this sounds counterintuitive. You may be wondering, “okay, well if I have noisy ductwork should I just ignore the problem and hope it goes away on its own? Or do I need to replace my entire ductwork system?” No, and no. There is a more effective way to fix your ducts, which we’ll get to in a bit. First we want to let you know why it is, exactly, that you shouldn’t use duct tape to seal up damaged ductwork.