Problems with cell phone reception will arise when a metal roof amplifies outages to nearby service towers. It's almost as if an accidental shield was created. The result can be a decreased cellular signal and a weakened radio frequency. A metal roof must be installed against the antenna that reflects the signal to work.
When the antenna enters the house, near a window, it shouldn't be a problem that it's inside. Despite what you've heard, metal roofs don't interrupt cell service. That said, this misinformation likely stems from the fact that your metal roof can make existing service problems worse. Repeaters are a simple and affordable solution that can fix the problem and allow you to use your mobile phone without a second thought in a house with a metal roof.
If you have a metal roof and have noticed issues with mobile phone service, you may need to consider creative solutions. Homes are attractive options for decades to come, but many homeowners worry that the use of technology in the home may be affected by metal roofs. In recent years, there have been a number of stories suggesting that poor cell phone reception in the home is the result of a metal roof. Adding a metal roof to an already damaged utility tower will cause increased cell phone reception problems.
The material offers impressive energy efficiency and exceptional durability, but there is a big question related to mobile phone reception that you need to answer before replacing the metal roof. There will be interruptions to cell phone service if metal roofs cause obstructions near nearby utility towers to reverberate. The radio frequency of a mobile phone can be suspended when this occurs, but the real problem is in the tower, not the metal roof. In the United States, metal roofs have not affected the telephone signal as much as those of other materials.
With this in mind, metal roofs in building materials with dense stone (along with other metal-containing buildings) do not facilitate the passage of signals, and the installation of an antenna fails as soon as it moves without understanding the signal directions.