![]() Run the wires from your main router to addition rooms either along the exterior or interior of the house. You’d be surprised how far a signal will go in a house with all concrete walls if you position the router correctly. It will also bounce off walls and work it’s way around corners. Even though the signal won’t pass through a concrete wall, it will go through wood doors and vents. You can also take advantage of how WiFi bounces off walls. Anywhere people will use their phones, laptops or TVs. I use a main router and then run cable to additional routers throughout the house in areas that require the best internet signal. The way we do it is with wiring and multiple routers. I build Modern style homes that frequently have poured concrete walls. There’s no way to pass a WiFi signal through concrete walls. If you’ve got a solid concrete wall with rebar, 2.4Ghz won’t pass through it.Įven if you have a thin hollow block wall with no rebar and a great WiFi signal, there will still be significant signal loss. Keep in mind that this is for thin, hollow concrete walls built with block. From what I’ve seen it’s at least a 2-3 bar loss. Although you will still have some signal loss. There’s a slim chance you’ll be able to pass through a concrete wall if it’s thin and hollow. However a 2.4Ghz WiFi frequency is lower and stronger. The signal will have a very hard time penetrating a concrete wall even if it’s hollow and thin. However, does 5GHz WiFi go through concrete walls?Ī 5Ghz frequency is high with a short range. Each band plays a role in providing a strong and stable connection. A tri-band or dual-band router is better than a single band. The band of your WiFi signal matters too. As you can see, even a hollow block wall almost entirely block a WiFi signal from passing through. Here’s a chart showing WiFi loss through a variety of wall materials. The only slim chance a signal has is if the wall is thin and hollow. If you’ve got poured concrete walls, there’s no way a WiFi signal will pass through. Even hollow walls are still very solid and usually contain some type of reinforcement. ![]() The outer layers of a block are about an inch thick per side and then there’s the grout. WiFi tests have shown that even an 8 inch hollow block wall can stop a radio signal. If you’ve got interior concrete walls, especially if they’re made from block, there’s a very slim chance some signal can penetrate. And they’re thicker than most interior walls because they’re load bearing. Any signal that manages to work it’s way into the concrete can be stopped by the rebar.Įxterior concrete walls are almost always solid and reinforced. This causes the concrete structure to act like a Faraday cage. Radio waves like WiFi don’t like metal structures, especially when they intersect each other at right angles. If a wall has vertical and horizontal rebar it forms an interlocking grid of steel. And then there’s steel reinforcement to consider. The thicker the wall, the harder it for a signal to pass through. Solid concrete is very dense and easily repels a WiFi signal. WiFi repeaters or WiFi extenders, you won’t get the signal through.īut there are solutions for getting a WiFi signal through a solid concrete wall that we’ll discuss ahead. Even with the help of a WiFi booster, a.k.a. The thicker the concrete, and wall covering, the harder it is for a WiFi signal to pass through. Each finish has it’s own resistance to a WiFi signal. In addition to the concrete wall, there may be drywall, plaster, tile, brick, wood paneling, or other finishes. Then there are wall coverings to consider. Very dense concrete is like trying to pass a WiFi signal through solid rock. The larger and more abundant the stones, the harder it is for WiFi to penetrate. Some concrete mixes are denser than others with larger stones. Solid concrete is too dense for a radio signal to penetrate. But if the wall is solid concrete the signal will bounce right off. If the concrete wall is thin and made from block with hollow cells, there’s a slim chance some WiFi signal will pass through. ![]() But interior concrete walls are usually thinner and often hollow. WiFi won’t pass through a wall that dense. Some exterior concrete foundation walls can be a foot thick and solid concrete. Especially if the wall contains steel reinforcement like horizontal and vertical rebar. The thicker the wall the harder it is for a signal to pass through. Concrete walls block WiFi signals if they’re poured solid or left as hollow blocks. ![]()
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