Category: WiFi · Last updated 5 Oct 2026
Why your Wi-Fi signal is weak in certain rooms
Why Wi-Fi drops off in certain rooms, from brick walls and foil insulation to distance from the router, and the fixes that make the biggest difference.
Wi-Fi dead zones follow the building, not the service. Signal loses strength with every wall it passes through, and some materials are far worse than others.
The usual culprits
Brick and concrete walls, foil-backed insulation, mirrors, water tanks and metal-framed walls all absorb or reflect Wi-Fi. A single foil-insulated wall can cut a signal more than three plasterboard walls.
What to do about it
Relocate the router first. If the problem room is at the far end of the house, a mesh node placed roughly halfway between will usually resolve it. Wiring an access point with ethernet is the most reliable option where it is practical.
A phone showing two bars can still be fine for browsing. Run a speed test in the affected room before treating it as a dead zone.
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