October 28, 2026
Tech Supply Shed
October 27, 2026
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Tech Supply Shed
How to Fix WiFi Dead Zones in a Two-Storey Home
To fix a WiFi dead zone in a two-storey home, first establish whether the problem is weak wireless coverage, a poor link between floors or a slow internet connection. Test the same device in several locations before buying another router. A mesh node placed in the dead zone itself may simply repeat a weak connection. The useful position is where it can receive a dependable link and serve the problem area.
Match the symptom to the first fix
Use these checks to narrow the cause before buying equipment. More than one fault can be present, so repeat the test after each change.
| What happens | Likely area to investigate | First action |
|---|---|---|
| Good downstairs, unreliable upstairs | Coverage or the link through the floor | Test the stairs and landing, then move one unit at a time. |
| Slow beside the router and over Ethernet | Internet service, router load or cabling | Pause large transfers, check cables and service status, then contact your provider if it persists. |
| Strong signal upstairs but poor performance | Weak mesh backhaul or congestion | Check the node's upstream link in its app; compare with a test beside the main unit. |
| Only one device struggles | Device settings, software or wireless capability | Test another device in the same place and update the affected device. |
| Dropouts while moving between floors | Roaming behaviour or gaps between coverage areas | Walk the route during a call and review node placement; switching also depends on the client. |
Make a simple two-floor coverage map
Draw each floor and mark the router, stairs, main work areas and rooms with problems. Note obvious obstacles such as masonry, large metal appliances and utility cupboards. Building materials and layout can matter more than straight-line distance. The room directly above a router is not guaranteed a better connection than a room reached through an open stairwell.
Use one device for the first comparison and keep the test conditions similar. Check near the router, at the stairs, on the landing and at the problem desk or television. Record whether the issue is slow loading, dropouts, high delay or no connection. Different symptoms can point to different causes, so avoid recording only a single speed figure.
Record a repeatable downstairs and upstairs test
Use the same phone or laptop, speed-test service and test server. Turn off mobile data on a phone so a cellular connection cannot hide a WiFi dropout. Pause optional downloads for the initial comparison, then test again during normal household use. Run three tests at each position and record a typical result, not just the fastest one.
| Test position | What to record | What it tells you |
|---|---|---|
| Beside the main router | Download/upload Mbps, latency in ms and any dropouts | Baseline performance before testing another floor. |
| Stairs or landing | The same figures, plus mesh app link quality if available | Whether this is a useful intermediate node position. |
| Upstairs desk or bedroom | The same figures and a short call or stream result | Whether the connection supports the task where you actually use it. |
| Same rooms after one change | Repeat with the same device and settings | Whether the change improved the original problem. |
Internet speed tests measure the whole path to a remote server, so they do not isolate WiFi by themselves. Compare locations and a wired baseline rather than treating one result as proof. There is no single speed or latency target that suits every household; a stable call and reliable access in the problem room are useful practical acceptance checks.
Separate internet speed from the wireless link
Test close to the main router and, where possible, compare a wired connection. If the problem is present there too, investigate the internet service, router load or upstream equipment before adding wireless nodes. A larger WiFi footprint cannot create bandwidth that is not reaching the home. Check the provider's service status and the equipment's normal operation.
If the near-router result is good and the upstairs result is poor, coverage or the path between floors becomes more likely. Repeat the test at a different time to notice congestion or household usage. A busy video call, large upload or overloaded device can distort a quick test. Collect a small pattern of results rather than making a purchase from one disappointing measurement.
Vilo 6 Mesh WiFi 6 802.11ax 3-Port Gigabit Router 2-Pack
A two-unit kit gives you a concrete mesh layout to test between floors. Confirm setup and backhaul options for the exact Vilo system. Place the second unit where it has a dependable connection, then retest the upstairs rooms.
Improve the main router position first
Move the router out of a closed cupboard where practical, keeping ventilation and cable safety in mind. A more open, central position can help distribute coverage. Do not hide it behind a television or against a large metal surface purely for appearance. Follow the manufacturer's orientation and placement guidance rather than inventing a universal antenna angle.
In a two-storey home, test locations near a useful path between floors, such as the stairwell, without obstructing walkways. The fibre connection point may limit movement, but the router does not always have to sit immediately beside it if suitable cabling is possible. If moving fixed cabling or installing outlets is needed, use an appropriate professional.
Put a mesh node where the connection is still good
A wireless mesh node needs a useful link back to the rest of the network. Place it between the main router and the weak area, then check the system's link-quality guidance. A landing can be worth testing, but it is not automatically correct for every house. Dense walls, floor construction and room geometry change the result.
TP-Link's Deco placement guidance emphasises the connection between units and using the app's assessment. Apply that principle to the documentation for your chosen system. Do not assume a Vilo or Archer product uses identical setup steps. More nodes can introduce complexity without improving a poor path, so add them only after measuring the result of sensible placement.
TP-Link Archer AX23 AX1800 Wi-Fi 6 Router
This individual router may suit a router-replacement or supported access-point role. Check the intended topology before buying. A new router in the same obstructed cupboard may leave the original floor-to-floor coverage problem largely unchanged.
Consider wired backhaul for difficult floor construction
Backhaul is the connection carrying traffic between network units. Where a compatible mesh system or access-point setup supports Ethernet backhaul, a cable can avoid relying on the difficult wireless path between floors. Check the exact topology and port requirements. An Ethernet socket on a device does not by itself establish every possible mesh arrangement.
For a home office or gaming area, a wired connection to the endpoint can also be worth considering. It solves a different problem from improving WiFi for every mobile device, but may be the simplest answer for one stationary workstation. Plan cable routes carefully and use professional help where the installation requires it.
Mesh, wired access point, router or extender?
| Option | When it fits | Main limitation |
|---|---|---|
| Reposition the existing router | Coverage improves when it is moved into an open location | Power and cabling may restrict the usable positions. |
| Compatible mesh kit | Several rooms or floors need coverage and units can maintain a good link | Wireless backhaul still has to cross the building; roaming is not guaranteed to be interruption-free. |
| Wired access point or mesh with Ethernet backhaul | Dense floor construction makes the wireless link unreliable | Requires a cable route and correctly configured, compatible equipment. |
| Router replacement | The main router is faulty or its capabilities are the measured bottleneck | A newer router in the same obstructed location may leave the dead zone. |
| Range extender | One modest coverage gap has a usable signal at an intermediate socket | Repeating traffic can reduce available throughput; network naming and roaming depend on the system. |
| Ethernet to one endpoint | Only a fixed desk, console or television needs a dependable link | Does not provide WiFi for phones or other rooms. |
For example, start with the landing if a downstairs router works well but an upstairs bedroom does not. If the landing also has a poor upstream connection, moving the second node into the bedroom is unlikely to help. Test a different path or consider Ethernet backhaul. A two-pack is a starting layout to measure, not a guarantee for every two-storey NZ home.
Retest the rooms that matter
After each change, repeat the original checks at the desk, bed, television and other real-use positions. Try a call or stream as well as a speed test. Walk between floors and observe whether a device changes connection cleanly. Keep the improvement that solves the original task rather than moving equipment repeatedly to maximise one isolated result.
If coverage is now good but a single device still struggles, investigate that device's software, wireless capability and location. Newer WiFi branding does not guarantee every client can use every feature. Compare the Vilo mesh kit and individual Archer routers by the network role you need, including whether the exact combination supports the intended mesh or access-point mode.
TP-Link Archer BE230 3600 WiFi 7 Dual-Band Router
Compare this router's supported network roles and client requirements with the actual problem you measured. Newer wireless branding does not remove dense floor construction. Plan placement, backhaul and any compatible expansion before choosing on the standard alone.
Related WiFi guides
- Where should you put your WiFi router? A room-by-room guide
- Mesh WiFi vs range extender: compare the options for dead zones
Sources and further reading
Compare the relevant range before choosing:
Networking at Tech Supply Shed.
Frequently asked questions
Should a mesh node go in the dead zone?
Usually it needs a better upstream link than that location provides. Test an intermediate position and use the system's link-quality tools.
Will WiFi 7 automatically fix upstairs coverage?
No. Building layout, placement, client support and backhaul still matter. A newer standard is not a substitute for a workable signal path.
Is the landing always the best location?
No. It is a useful candidate to test, not a universal answer. Floor materials and the positions of the other units determine the result.
When is cabling worth considering?
When the wireless path between floors remains unreliable or a stationary work area needs a dependable connection. Confirm the equipment's supported wired arrangement first.
Choose the right setup for your needs
Explore networking at Tech Supply Shed, compare the exact model details and choose the option that fits your routine.
