Many WiFi problems come not from the router itself but from the environment in which it has to operate. Check these five factors before buying new hardware.
- It's usually not one big problem, but several smaller factors stacking on top of each other.
- Thick obstacles and a poor router position hurt more than straight-line distance alone.
- Before replacing your hardware, check whether the real cause is simply where the router is standing.
1. Thick walls and floors
Concrete, reinforced concrete and thick partitions can strongly attenuate the signal. Distance matters, but so does the entire path between the router and the device.
2. Poor router placement
A router in a corner, on the floor or inside a closed cabinet can provide much worse coverage than the same router in a more central, open position.
3. Too many obstacles
Several walls along the path can be a bigger problem than one wall farther away. This is why the floor plan matters, not just the number of metres.
4. Radio interference
Neighbouring WiFi networks and other sources of interference can reduce connection quality. In an apartment building, this can be a much bigger issue than in a detached house.
5. A poorly placed mesh node
A mesh node should not normally be placed deep inside the dead zone. It needs to sit between the router and the weak area so that it can maintain a good connection back to the router.
What can you do?
Start with a floor plan. Mark the walls, router and places where reliable WiFi matters. Perfect WiFi can calculate the predicted signal distribution and suggest a better router or mesh position. If you already have WiFi, you can also take measurements at several points and adapt the model to real conditions.
The biggest improvement often comes not from a more powerful router, but from better network geometry.
FAQ
Which of these factors hurts the most?
Usually poor router placement, since it amplifies the effect of every other factor at the same time.
Will a new router fix these problems?
Sometimes, but if the cause is placement or obstacles in the signal path, new hardware in the same spot may only bring a small improvement.
Where should I start improving coverage?
Start by checking the router's position relative to the rooms where you actually need WiFi — it's the cheapest change and often the most effective.
Upload your floor plan to Perfect WiFi, mark walls and important areas, and check where your router or mesh has the best position.
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