If you find yourself constantly struggling to get a strong WiFi signal, there might be something blocking it – like a certain material. But what are the true causes and reasons WiFi signals get blocked?
There are a lot of myths, but we can help unlock the mysteries with a list of materials and common objects that might interfere with your WiFi.
Let’s make sure it’s not something else first. Take your router and:
Once you've done this, you can check your WiFi signal strength. Let’s explore what can interfere with your internet signal, including materials and other objects.
Some sneaky materials are huge signal blockers you might not have thought about. Watch out for these everyday materials that might interfere with your WiFi:
For some science on the matter, a report from the U.S.-based National Institute of Standards and Technology covers many materials from concrete to plywood.
If these materials are around, Mesh WiFi systems can help by pushing signals seamlessly around obstacles and make weak signal a thing of the past. Our unbeatable Premium WiFi service uses Mesh WiFi to guarantee signals in the rooms that matter most – making us London’s fastest option.
There may be everyday objects in your midst that also block signal. Here are some WiFi signal blockers that could be ruining the speed and reliability of your internet:
If you have any of these, try moving them and your router around to find the best path for your WiFi. When it comes to your router itself, look for service providers who provide suitable routers that can handle the internet speeds you require.
WiFi signals use a radio frequency range, so things that also use this range that will interfere with your internet connection or cause blockages.
With that in mind, let's myth-bust common misconceptions about WiFi and boosting your signal:
Yes (or maybe) |
No |
Microwaves: Possible, as they operate on a similar frequency–but modern WiFi uses other frequencies and shielding techniques. |
Weather: Rain, snow, or fog do not directly block WiFi signals. |
Plasterboard: Possible, but only if it is heavily insulated or has metal parts (and wires)–but not by itself. |
Paper or cardboard: There is a very low chance of any interference for radio waves with such thin materials. A bookshelf full of books could block signals. |
Fridges: If they are big and made of metal, a fridge can easily block WiFi signals. |
Windows: Not a problem unless the glass is very thick, has a dense metal coating, or wires (like light switches) nearby. |
Neighbour’s network: If a neighbour has a router very close to yours, like on the other side of a thin wall, it can easily interfere with WiFi signals. |
Wood: WiFi signals pass through wood with minimal interference. |
Thick, dense materials like concrete can block WiFi signals, as well as certain objects that use the same frequencies. Router placement can help avoid interference and blockages.
WiFi extenders or Mesh WiFi systems can help expand your signal range and navigate obstacles. Our Premium WiFi service uses high-quality routers and mesh technology to deliver our guarantee of whole home coverage, so your WiFi will be with you throughout.
Our 3 Gbps package delivers the fastest speeds in London, and all our broadband packages deliver 100% full fibre for the most reliable connections.
If you live in London, Surrey, or Sussex, check your postcode to see broadband availability in your area. Keep up to date with our blog for more news, tips, and updates on WiFi, signal, and other topics.