Mount a Wi-Fi router or mesh unit on a dot-and-dab plasterboard wall

Fix a Wi-Fi router bracket securely to a dot-and-dab wall using the right long fixing, safely and without damage.

RT-01Choose where the router will goPick a central spot with a clear line to the rooms you need coverage in, ideally at chest height or above. Stay away from mirrors, radiators and large metal objects, which block Wi-Fi signal. Check there's a socket nearby, or a sensible route for the power cable.

1 each · Pencil

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1 each · Tape measure

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RT-02Check what's actually behind the plasterboardDot-and-dab plasterboard is glued to the wall with blobs of adhesive, leaving an air gap of roughly 20-50mm behind the board and no timber frame. Tap across the wall — a hollow, uneven sound with no regular pattern is typical of dot-and-dab. If you find evenly spaced hollow sections every 400-600mm, that's a timber or metal stud wall instead, so stop here and check with a detector before you drill.

1 each · Stud and cable detector

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RT-03Do your safety checks before drillingCables and pipes can run almost anywhere in a wall, and a detector can still miss ones that are deep, in metal conduit, or behind foil-backed plasterboard. Find your stopcock (usually under the kitchen sink) and check it turns freely, so you can shut the water off fast if you hit a pipe. If you have any doubt at all, turn off the relevant circuit at the consumer unit before you drill.

RT-04Drill a small pilot hole to confirm the wall build-upMark your fixing point and drill slowly with a 3mm bit. Grey plaster dust followed by a short gap and then firmer resistance confirms dot-and-dab over solid masonry. If you hit timber straight away, you've found a stud, not dot-and-dab — stop and use the stud method below instead. Fine grey metal swarf means a metal stud, so stop for the same reason.

1 each · Drill

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1 each · 3mm drill bit

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RT-05Fit the right fixing for dot-and-dabDot-and-dab needs a fixing long enough to pass through the 12.5mm plasterboard, cross the air gap, and grip the solid masonry behind — usually 60-75mm overall. Use a proper dot-and-dab fixing (a long self-drilling frame fixing or masonry screw with a plastic sleeve), not a short standard wall plug. Drill through to the masonry using the bit size stated on the fixing pack, usually 6mm or 7mm, then insert the fixing and drive it home.

1 pack · Long dot-and-dab wall fixing kit (pack of 4)

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1 each · Masonry drill bit 6mm or 7mm

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RT-06If it turns out to be a different wall typeSolid brick or block with no air gap: drill a 6mm hole 35-40mm deep and use a standard wall plug and screw. Timber stud: find the stud centre and drive a 4x40mm wood screw straight into the timber, no plug needed. Metal stud: never use a wood screw or plain plastic plug, as it strips straight through 0.5mm steel — use a self-drilling metal-stud fixing or hollow-wall toggle, and if the router will pull on the fixing, fix through to a noggin or the masonry behind instead. Lath and plaster: drill gently to avoid splitting the laths, and use a spring toggle or long screw with a hollow-wall fixing set into the plaster key, not just the lath itself.

1 pack · Standard wall plug and screw pack

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2 each · Wood screw 4x40mm

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2 each · Metal-stud hollow-wall fixing

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2 each · Spring toggle fixing (for lath and plaster)

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RT-07Fit the bracket and hang the routerScrew the router's wall bracket into the fixing you've just set, checking it sits level with a small spirit level before fully tightening. Clip or slot the router onto the bracket as the manufacturer's instructions show.

1 each · Router wall mount bracket

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1 each · Small spirit level

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RT-08Route and tidy the cablesRun the power lead, and any Ethernet cable, down to the nearest socket using small cable clips to keep it flat against the wall. Keep cables away from walkways and doorways, and leave a little slack near the router so it isn't pulled tight.

1 pack · Cable clips (pack)

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RT-09Power up, test and clean upPlug in the router, let it fully start up, and check the signal reaches where you need it before you tidy the tools away. Vacuum up any dust from drilling and wipe the wall down.

1 each · Dust sheet

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