These Construction Materials Can Affect Your Cellular Reception


A man enjoying his phone with a cell phone booster.

Poor cellular reception is not some out of the world problem that you don’t know about. It is a common scenario that happens due to one or many factors. If you notice significant differences in signal reception inside and outside your building, there is a chance that the construction materials of your building are causing the difference.

Unless you have enough knowledge about signal blocking construction materials and the extent to which they block cellular signals, you cannot come up with a building design that affects signal reception in the least possible way. 

Here is a list of construction materials that block cellular signals. 

Clear Glass 

Many people believe that clear glass is ideal for letting in cellular signals as it lets in light. However, it is not true. Clear glass bounces cellular signals around and even reflects the signals away from the house. This is especially true in the case of double insulated windows. The triple-pane windows seen in many homes reflect cellular signals away even more. 

Low-E glass is used in buildings to keep its indoor space cool or warm depending on the weather. The glass is however known for deflecting cellular signals the most among all window glass types. 

Ply Wood And Solid Wood 

Plywood is commonly used to make the framework of most buildings. It may reduce the signal strength of 3G and 4G networks up to -6 dB. When it comes to 5G networks, the impact is even more. The signal loss may reach up to-9dB. Signal loss issues worsen when the plywood becomes damp/wet.

The solid wood used in buildings also could lead to poor cellular reception. 


Metals used to make roofs of buildings and indoors slows down cellular signals. The signal blocking nature of buildings is the reason why people who live in houses with metal roofs notice a significant difference between outdoor and indoor signal strength. 

5G signals are affected the most due to metals used in buildings because the network uses higher frequencies that have poor performance when it comes to penetrating metals. 


Brick stands strong against elements but affects cellular signal reception. The thickness of bricks, the mortar that comes between them, and the supplementary materials on their interior are common reasons for their signal blocking nature. 


Concrete makes it difficult for cellular signals to penetrate it. Buildings with concrete walls usually have lower signal strength indoors when compared to outdoor strengths. 

If you have poor cellular signals inside your building, you may consider installing a cell phone booster.

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