UniFi access point mounted on plaster ceiling in historic home

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UniFi Access Point Placement for Plaster and Stone Homes

Design Wi-Fi layouts that overcome dense walls, hidden conduits, and heritage finishes using UniFi 6 access points.

Published Oct 23, 20252 min read

Quick summary

Historic construction demands predictive design, careful mounting, and deliberate PoE planning. We combine UniFi heat maps with on-site validation so plaster, stone, and metal lath don’t cripple Wi-Fi coverage.

Follow this playbook to document materials, choose the right access points, wire with service loops, test without damaging finishes, and capture documentation for future upgrades.

Map construction materials room by room

Gather architectural plans, old permits, or renovation photos. Note plaster thickness, mesh or metal lath, stone fireplaces, radiant heat panels, and built-ins that can shadow signals.

Photograph open walls before they close so you know where studs, chases, and plumbing sit. Label potential mounting locations and conduit paths with painter’s tape so tradespeople know what to avoid.

Select the right UniFi radios

In most plaster homes we pair UniFi 6 Long-Range APs with a few in-room UniFi 6 Plus units where client density is high. Ceiling mounts generally outperform wall mounts, but stone or beam ceilings may require creative soffit placement or side-wall brackets.

Plan for at least one AP per floor and add more in areas with heavy masonry or thick plaster. Record your design assumptions and expected RSSI levels before you start cabling.

Ubiquiti UniFi 6 Plus Access Point (U6+)

Ubiquiti UniFi 6 Plus Access Point (U6+)
  • Dual-band Wi-Fi 6 with 2x2 MIMO for dense rooms
  • Compact, low-profile design ideal for discreet ceiling mounts
  • Powered via 802.3af PoE with easy adoption into UniFi Network
$113.00
View on Amazon

Pre-wire with PoE and service loops

Run Cat6 or Cat6a from the rack to each AP location before finishes return. Use flexible conduit when drilling through masonry, leave accessible junction boxes with engraved labels, and record the route in your documentation set.

Size PoE switches for current draw plus at least 30 percent headroom. Label both ends with heat-shrink or engraved tags so future technicians can service the run without guesswork.

TP-Link LS108GP | 8 Port PoE Gigabit Ethernet Switch | 8 PoE+ Port @ 62W | Plug & Play | Extend Mode | PoE Auto Recovery | Desktop/Wall Mount | Silent Operation

TP-Link LS108GP | 8 Port PoE Gigabit Ethernet Switch | 8 PoE+ Port @ 62W | Plug & Play | Extend Mode | PoE Auto Recovery | Desktop/Wall Mount | Silent Operation
  • Reliable budget PoE for APs/cameras
  • Gigabit ports
$53.99
View on Amazon

Validate coverage without damaging finishes

Use lightweight temporary mounts, tripods, or painter’s tape to test AP positions before drilling. Run active surveys with doors closed, note stairwells and porches, and document RSSI on both 2.4 and 5 GHz bands.

Adjust placement in small increments to avoid decorative moldings or plaster medallions. Testing before drilling avoids expensive repair work on historic finishes.

Document and maintain

Record exact AP locations, MAC addresses, and cable paths. Capture QR codes for controller adoption, note channel plans, and schedule annual walkthroughs to confirm signal quality hasn’t changed after seasonal décor updates.

Store before-and-after heat maps, penetration tests through plaster or stone, and any channel adjustments made after installation. When furniture or artwork moves, retest quickly and update the plan.

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