How Wi-Fi Bands Affect Your Office: Coverage, Capacity, and Cost
Office Wi-Fi problems are usually capacity, not coverage. Learn how bands, access points, and planning rules control performance and cost.
When office Wi-Fi struggles, the first instinct is to buy a stronger router. In offices, though, the problem is usually not signal strength. It is capacity: too many devices sharing too little airtime. Understanding the bands helps you spend money where it counts.
Coverage versus capacity
- Coverage is whether a signal reaches every place people work.
- Capacity is whether enough bandwidth is available when everyone is online at once.
A single powerful router can cover a floor and still fail at capacity once 30 people are on video calls. Adding access points with lower power, spaced sensibly, usually solves capacity better than raising power.
How each band fits an office
| Band | Role in an office |
|---|---|
| 2.4 GHz | Legacy devices, printers, badge readers, sensors. Keep it for what needs it. Consider reducing its use in dense areas. |
| 5 GHz | The workhorse for most laptops and phones. Plan capacity around it. |
| 6 GHz | Newer laptops and phones in dense areas such as meeting rooms and open-plan desks. Adds clean capacity. |
Planning rules of thumb
- Users per access point: keep it moderate. As a rough guide, many designs aim for a few dozen client devices per radio at most, and fewer for heavy video use. Treat this as a starting point and confirm with a survey.
- Walls: concrete, brick, glass with metal coating, and elevator shafts block signal heavily, especially at 5 and 6 GHz.
- Layout: put access points in the ceiling near the people, not at the edges of the building.
- Channel plan: avoid reusing the same channel on neighbouring access points. 5 and 6 GHz have more channels available.
- Channel width: use 20 or 40 MHz in dense spaces, and 80 MHz where there are fewer access points.
Cost drivers
- Access points (more, lower-power units often cost less than a few premium ones).
- Cabling and Power over Ethernet switches. Cabling and installation can cost as much as the hardware.
- Management: cloud subscriptions or controller licences.
- Site survey fees.
- Internet bandwidth and switch uplinks, because Wi-Fi cannot be faster than the wire behind it.
When to commission a site survey
Ask for a survey if you have more than a few access points, thick walls, a warehouse or large open floor, or strict performance needs such as voice or point-of-sale systems.
Next, see A Wi-Fi Upgrade Checklist Before You Buy New Access Points and Is Upgrading to 6 GHz Worth It for a Busy Office, Café, or Retail Space?.
Next Steps
Backspace Business Solutions plans office Wi-Fi around capacity, not just coverage, across Kampala and Uganda. Our Networks & Infrastructure team handles survey, design, cabling, and commissioning as one project.
Request a Free Site Survey to find out whether your office needs more access points, better placement, or a smarter band plan.
Frequently Asked Questions
What is the difference between break-fix and managed IT services?▼
How can managed IT services reduce my business costs?▼
What response time can I expect from my IT support provider?▼
Do managed IT services include cybersecurity protection?▼
How do I choose the right IT support provider?▼
Not sure which of this applies to you?
Reading about a problem is not the same as knowing what yours actually is. The Solution Advisor asks a few questions about your environment and gives you a preliminary technical interpretation — what to check first, and what can probably wait.
Follow Backspace
Field notes from live projects in Kampala and beyond — new guides, failure post-mortems and pricing updates. Pick the channel you use.
