In this article
A Wi-Fi dead zone is an area of the office with no signal or a connection too weak to work on, and it is almost always the result of poor network design, not a lack of equipment. The reliable way to eliminate it is to measure first, with a site survey, and then correct it with well-positioned, managed access points. That way the problem is solved with data, without buying more hardware than needed.
Where dead zones come from
- Building materials Concrete, thick walls, metal and glass block the signal.
- A single access point Trying to cover too large an area.
- Poor placement Equipment in a corner or shut away in a cabinet.
- Interference From other equipment and neighbouring networks.
- Density Too many devices competing for the same access point.
Measure before you buy: the site survey
A site survey measures the signal throughout the space, produces a heat map and shows where and why the Wi-Fi fails. It is the step that separates a designed business Wi-Fi network from one put together by trial and error. DataRoad - IT Services and Consulting carries out a Wi-Fi site survey and coverage optimisation before any equipment proposal.
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Fixes, from the simplest to the most complete
- Reposition — move access points to central, unobstructed locations.
- Optimise channels and power — reduce interference between access points and with neighbours.
- Enable roaming — so devices move from one access point to the next without dropping.
- Add access points — in the areas the heat map indicates, connected by cable and PoE.
In a managed network, these adjustments do not happen just once: they are reviewed continuously through access point monitoring.
Frequently asked questions
Will a repeater solve it?
Home repeaters are a patch: they reduce speed and create unstable connections. In a business, the right solution is additional access points integrated into the same managed network.
How many access points are needed?
It depends on the area, the materials and the number of devices. The site survey shows how many and where.
Can it be solved without building work?
Often, yes, by repositioning and making use of existing cabling with PoE. The diagnosis shows what is feasible in your space.
Next step: Wi-Fi without dead zones
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