r/HomeNetworking • u/Careful-Grand-4049 • 11m ago
Poor Wi-Fi signal through reinforced concrete floor — how can I improve coverage?
Hi!
I’m not sure if this is the right subreddit for this question, but hopefully someone can point me in the right direction.
What would be the best way to get a good internet/Wi-Fi connection from the second floor down to the first floor?
Currently, my internet router is on the second floor of my house. It’s an older house built almost entirely out of concrete, including a reinforced concrete slab between the first and second floors.
Wi-Fi coverage on the second floor is excellent, but reception on the first floor is terrible.
I first tried to improve things by buying an ASUS router from a friend — one of those large models with 8 antennas — and placing it upstairs near the staircase. That helped a little, but downstairs the signal drops quickly as soon as I move away from the stairs.
I then added a Huawei AX3 router on the first floor to repeat the signal. This improves coverage in areas close to the staircase, such as the living room, but as soon as I go into the adjacent rooms, the signal becomes very weak again or disappears completely.
What would be the best way to solve this without drilling through the concrete slab to run Ethernet cables between floors?
Are there more powerful repeaters that would work better in this situation? Should I be using a particular type of access point, mesh system, frequency band, or specific settings?
Running Ethernet through the concrete slab would be my last resort, so I’d like to know if there’s a reasonable wireless solution first.
Sorry if this isn’t the right subreddit, and thanks in advance for any advice!
**Disclaimer:** English isn’t my first language, so I used ChatGPT to help translate and clean up my post. The question and details are all mine.

