Yes — and a single bearing wall can cost you around 90 percent of your range. Here are the published numbers, and the three ways around a wall you cannot shout through.
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Yes, Wi-Fi passes through concrete — and it loses so much doing so that the practical answer is often “no”. Keenetic's published attenuation table puts a 30.5 cm bearing wall at 20 to 25 dB of loss at 2.4 GHz, which leaves roughly 10 percent of the open-space distance on the far side. Reinforced concrete with steel mesh inside it is worse again.
That one figure explains almost every concrete-wall question people ask. It is not that the signal stops; it is that it arrives so weakened that your phone shows a bar or two and throughput collapses. And because the loss is in decibels, it compounds: two such walls in a row leaves you with a fraction of a fraction.
Obstacle
Rough loss
Practical effect
Open doorway
Negligible
Use it — this is the route the signal wants
Interior drywall partition
A few dB
Two or three of these are survivable
Wood floor or ceiling
Moderate
Why upstairs is weaker than the same distance sideways
30 cm bearing wall (brick or concrete)
About 20-25 dB at 2.4 GHz
Leaves roughly a tenth of the open-space distance
Reinforced concrete with steel mesh
Severe
The mesh behaves like a screen; treat the wall as solid
Foil-backed insulation, metal lath, mirrors
Severe
Common in older homes and frequently mistaken for thick plaster
Relative attenuation by obstacle, drawn from published attenuation references. Treat these as orders of magnitude rather than exact numbers for your wall.
Scroll the table sideways to see every column.
Why a newer Wi-Fi standard makes it worse, not better
This is the most expensive misunderstanding in this subject. Higher frequencies carry more data and penetrate less. So of the three bands your router has, 2.4 GHz travels furthest through masonry, 5 GHz does worse, and 6 GHz — the band that Wi-Fi 6E introduced and Wi-Fi 7 widened — does worst of all.
Which means buying a Wi-Fi 7 router to get through a concrete wall is buying the wrong tool twice over: the new band is the one least able to cross it, and transmit power is capped by regulation, so no consumer router is allowed to simply shout louder. Wi-Fi 6E versus Wi-Fi 7 and is Wi-Fi 7 worth it both make the same point: these generations are about congestion and throughput, not range.
This usually backfires
A thick wall cannot be out-powered
Every consumer router in the US is limited by regulation to the same transmit power class, so “high-power” and “long-range” routers are not legally permitted to be louder than the one you own. More antennas changes the shape of the coverage, not its reach — what actually extends reach from a single box.
How to find out what your wall is actually doing
Stand on the router side of the wall and note your signal strength and speed. Walk through the nearest doorway and take the same readings in the same room on the far side. Then take them standing directly behind the wall. If the doorway route is dramatically better than the straight-through route, you have confirmed the wall rather than the distance is the problem — and you have also found your fix. A free heatmap app makes this quicker: heatmap apps and room-by-room testing and the written speed-test method are both ten-minute jobs.
The three ways around a wall you cannot cross
1. Go through the opening instead of the wall. Doorways, stairwells, hallways and the gap above a staircase are near-free routes. Moving the router so its line to the weak area passes through a doorway rather than a bearing wall costs nothing and routinely gains more than hardware would — where to put your router.
2. Put a radio on the far side, fed by a wire. This is the proper fix. Coax with MoCA adapters, mains wiring with powerline, or Ethernet if you can route it — then an access point or mesh node at that end. The wire carries the signal past the wall and the radio starts fresh on the other side.
3. Add nodes so no single link has to cross it. If the geometry allows a path around the wall — through a hallway, up a stairwell — a mesh system can relay around the obstacle rather than through it. That is the argument in best mesh Wi-Fi for thick walls, and the extender equivalent is best extenders for thick and concrete walls.
If your house is concrete throughout
Apartment blocks, mid-century construction and many basements are effectively a grid of these walls. In those buildings the wireless-only approach has a hard ceiling no amount of money raises, and the plan that works is a wired spine with radios on it — wired and Wi-Fi together. The house-type pages go further: Wi-Fi through concrete, brick and stone and weak Wi-Fi in the basement.
How we picked
We do not run a test lab. Rankings here are built from the manufacturers' published specifications, measurements taken by independent outlets that do have labs, and the structural reasoning on this site about what a given house or job actually needs. Every product was checked as currently sold before it was included. Where a figure appears it is attributed and linked in Sources; where we have no basis for a claim, it is left out. Our methodology sets out exactly what we will and will not assert.
Quick picks
Ranked by our published scoring rubric (gets past the wall, cost, what it needs). Tap any row to jump to the full write-up, or go straight to the retailer from the right-hand column. How we score.
#
Product
Best for
Score
Price
1
Illustrative
goCoax MA2500DThe honest answer to a concrete wall is not to cross it wirelessly. If there is a coax outlet on both sides, a MoCA pair carries the full connection past it with nothing in the air.
TP-Link Omada EAP610Once something wired reaches the far side of the wall, a ceiling-mounted Wi-Fi 6 access point turns it into proper coverage — and it costs about what a good extender does.
Comtrend PG-9172G.hn powerline up to 1.2 Gbps, and the pick that copes best with old wiring and cross-phase runs. Still a wire, which is the only thing that reliably beats masonry.
Scroll the table sideways on a narrow screen. Scores are our editorial assessment from published specifications and independent testing by named outlets — not our own lab results. What we do and do not test.
The picks in full
Illustrative
#1 · Going around the wall over coax
goCoax MA2500D
goCoax · Midrange
Full MoCA 2.5 speed at a fair price — if your house has coax in the rooms you care about, this beats every wireless answer.
Key specifications
Standard
MoCA 2.5
Throughput class
2.5 Gbps
Requires
Existing coax in both rooms
Score 9.0/10
Gets past the wall10.0
Cost8.0
What it needs7.0
What it gets right
+Coax is shielded, so unlike powerline it does not care about your wiring's age or noise
+Turns an old cable TV outlet into a gigabit-plus Ethernet port
+The cleanest way to wire mesh backhaul in a house you cannot drill
What to watch for
−You need coax running to both rooms, and it needs to be on the same splitter tree
−Usually needs a MoCA filter at the point of entry to keep the signal in the house
#ad We do not publish a price we cannot verify, so the button opens Amazon's own listing. How we are funded.
Common questions
Can Wi-Fi go through concrete walls?+−
It can, with heavy loss. Keenetic's published attenuation figures put a 30.5 cm bearing wall at 20 to 25 dB at 2.4 GHz, which leaves roughly 10 percent of the open-space distance beyond it. Reinforced concrete containing steel mesh is worse, and should be treated as a wall the signal does not cross.
Which Wi-Fi band is best through concrete?+−
2.4 GHz. Lower frequencies penetrate better, so 2.4 GHz does best, 5 GHz does worse and 6 GHz does worst. That is also why a Wi-Fi 6E or Wi-Fi 7 router is not an answer to a thick wall: its newest band is the one least able to cross it.
Will a Wi-Fi extender work through a concrete wall?+−
Only if the extender itself has a usable signal, which means placing it on the router's side of the wall or within line of sight through a doorway. An extender can only rebroadcast what it receives, so one placed beyond the wall rebroadcasts a weak signal at a stronger bar. A wired link plus a radio on the far side is the reliable version.
Is there a router powerful enough to get through concrete?+−
No. Transmit power for consumer equipment is capped by regulation, so nothing you can buy is permitted to be meaningfully louder than what you already own. Extra antennas change the shape of coverage rather than its reach. Route around the wall with a wire, or add a radio on the far side.
Illustrative
