We have a large building and cannot get Wi-Fi and networking to cover the whole thing. What is the fix?

The instinct in a big building is to buy a stronger router or plug in repeaters, and both usually disappoint. One radio cannot cover a large footprint no matter how powerful, and consumer repeaters cut throughput roughly in half at each hop while adding interference. Walls, metal, masonry, and floors (all common in larger and older WNC buildings) attenuate signal in ways a spec sheet cannot predict.

The professional fix follows a standard pattern: a wireless survey maps how signal actually behaves in your building, then multiple business-grade access points are placed where the survey says, each connected by ethernet cable back to your switch (wired backhaul is what makes multi-point Wi-Fi fast instead of degraded). The access points cooperate under one controller, so devices roam seamlessly as people move through the building, and the same visit typically cleans up the wired side: where switches live, what feeds what, and whether cabling supports current speeds.

Cost scales with building size but is almost always a one-time project rather than a recurring bill, and it permanently retires the complaint. If your building is large enough to have this problem, it is large enough to justify doing it right once. A provider should be willing to survey before quoting; be wary of anyone who prices access points without seeing the space.