How to test Wi-Fi near a garage or workshop

Wi-Fi may work well in the house but stall at the workbench, drop near a garage door, or struggle in a detached workshop. Before buying an extender, check where the connection gets worse and whether the problem is limited to one spot.

The Wi-Fi Map lets you measure connection quality at different places and see where it is strong or weak. Use it to record a baseline, then repeat the measurements after changing the router or adding an access point.

Map Wi-Fi from the house to the workshop

1. Open the Wi-Fi Map on a device connected to your home Wi-Fi. Keep using the same device for each measurement so you can compare locations fairly.
2. Follow the tool's on-screen instructions to take a reading near the router, then at the nearest window or exterior door, the garage entrance, and the places where you use Wi-Fi inside the garage or workshop.
3. At each spot, keep the device in roughly the same position and let the reading finish. Avoid starting a large download, video stream, or backup while you measure, since other traffic can affect the result.
4. Include the workbench, the farthest corner, and any area where a device disconnects. If a metal garage door may be involved, take readings with it open and closed.
5. Look at the map for changes between nearby points. Repeat any surprising reading once before deciding that a location is consistently weak.

Use a laptop or phone that stays connected to Wi-Fi throughout the test. On a phone, temporarily turn off cellular data if it might carry internet traffic instead. Keep your position and the test conditions similar when you repeat the map after a change.

What the map result means

Quality gets worse as you move toward the garage

If readings decline gradually from the router to the workshop, distance and the walls between them are likely limiting the connection. Concrete, brick, foil-backed insulation, and metal doors can block or weaken radio signals. A strong reading inside the house does not guarantee a usable connection in a separate building.

One corner is much worse than the rest

A weak patch may be caused by a particular wall, large metal object, cabinet, or the position of the router. Compare the nearby points and check whether moving a few feet changes the result. Browsers cannot read Wi-Fi signal strength in dBm, so the map measures how the connection behaves, such as response time, jitter, and lost requests, rather than showing a radio signal number.

Readings vary a lot at the same spot

Large changes between repeated measurements can point to interference, a device switching between access points, or a temporary network load. Metal equipment, other wireless devices, and busy household internet use can all affect a reading. Repeat the test at a quieter time and with the garage door in the same position before changing equipment.

The map looks good, but websites still feel slow

A good connection-quality result does not prove that every website or online service is fast. The service itself, a busy internet connection, or a separate issue with a particular device can still cause delays. Try the same website in the house and workshop, and compare another device at the same location.

How to improve Wi-Fi in a garage or workshop

1. Move the router to a more open spot. Place it higher and closer to the side of the house facing the garage, rather than on the floor, inside a cabinet, or behind a television. Keep it away from large metal surfaces where possible, then map the same locations again.
2. Check the device's Wi-Fi connection. Confirm that it is connected to your home network rather than a guest network or a phone hotspot. On Windows 11, open Settings › Network & internet › Wi-Fi. On macOS, open System Settings › Wi-Fi. On an iPhone, check Settings › Wi-Fi; Android menu names vary, but look under Settings › Network & internet or Connections.
3. Compare the router's Wi-Fi bands. If your router offers separate 2.4 GHz and 5 GHz networks, test both in the workshop. A 2.4 GHz signal often reaches farther, while 5 GHz can be faster nearby but is more easily weakened by obstacles. Use the same network band for each set of readings.
4. Test with the garage door open and closed. A metal door can change the route the signal takes. If the connection works with the door open but drops when it is shut, moving the router may help, but a second access point closer to the workshop is often a better solution.
5. Add an access point where the connection is still reliable. A wired access point near the garage is usually more dependable than placing a wireless extender in the weakest corner. If you cannot run a network cable, compare a mesh node or extender placed between the house and garage, not at the spot with no usable Wi-Fi. Map the workshop again after installation.
6. Restart the router and test again. Restart it if readings have recently become poor everywhere. Wait for it to reconnect fully, then measure the same points before changing more settings.

When the connection problem is outside the garage

If readings are poor near the router as well as in the workshop, start with the home network rather than buying equipment for the garage. Repeat the test when other people are not streaming or downloading, and check whether several devices have the same problem. If the connection is poor across the home at different times, contact your internet provider or inspect the router and modem before focusing on the workshop.

Why the garage door position matters

Wi-Fi does not travel only in a straight line. Signals can reflect off surfaces and reach a device by more than one path. Closing a large metal door can change those paths, so a spot that works well with the door open may behave differently when it is shut. Record the door position for each reading, and compare like with like before deciding that a router move helped.