Metal roofs could be quite an archenemy to TV antennas so does any other built-up material that comes with metal or dense stone. The latter would prevent the signals from penetrating through the body and pose difficulties when it comes to antenna installation. So bear in mind to pick the antenna site perfectly aligned with the signal’s path. The antenna has to be shielded and kept away from metallic surfaces. Furthermore, supplies such as data wirings, ductworks, and other electrical mediums pose a serious menace to the digital signals and have to be placed at a minimum distance of 6 feet or greater. In short, if you are someone who has metal roofing, installing an antenna in the attic must be fended off at any cost as it has a very low probability of success.