However if you have good to excellent cell phone reception now the metal roof should not have any noticeable effect.
How to boost cell signal in house with metal roof.
Steel or aluminum walls are very good at blocking wireless signals.
Use a wireless repeater to strengthen the wireless signal as you go through your home.
What causes bad cell phone reception at your house.
Metal buildings offer a challenge for cellular signals.
An electronics store should be able to sell you a cell phone signal booster and an external antenna.
See more on metal roofing here.
The wireless repeater will also extend the effective range of your wireless network although it will not have as great of an effect as it should due to the metal roof.
Even if you have a perfect signal outdoors you might get little or no cellular coverage indoors.
To increase cell signal at home you first need to understand what things can cause poor cell reception.
The easiest way to improve the cell phone signal inside a metal building is to use a building cellular signal booster system.
These systems can boost the signal indoors for one or several cell phones.
If your home has energy efficient windows a metal roof or siding or is made from concrete or brick these materials can all block signal.
Adding a cell phone signal booster in your house would have been helpful before the metal roof and certainly would be helpful after your metal roof is installed.
The cables should come with the power booster.
You ll connect the power booster to the rf port of the cell phone.