Wi-Fi by the building it has to work in
Racking, ceiling height, wall construction, device mix and the way a space is actually used change the RF problem completely. These are the environments we are in most often, and what each one does to a design.
Every building fails in its own way
Wi-Fi is often sold as though buildings were interchangeable — so many square metres, so many access points, one design approach applied everywhere. They are not interchangeable, and the differences are not cosmetic. They change the physics.
A warehouse changes shape every day as stock moves through it, so the attenuation you measured on Sunday is not the attenuation you get on Tuesday. An office is mostly glass and plasterboard with a hundred people on video calls in a space that would need a handful of access points if you designed for coverage alone. A school puts thirty devices in a room and asks them all to do the same thing at the same moment, thirty times over, then goes quiet for six weeks. A marina has almost nothing to obstruct the signal and everything to corrode the hardware. A care home has to coexist with nurse-call and telecare equipment that must never be interfered with.
Five variables account for most of the difference between one building and the next:
- Construction. Steel racking, dense masonry, foil-backed insulation, lath and plaster, structural glazing and lift shafts all attenuate or reflect differently, and the worst offenders are frequently the ones nobody thinks to mention.
- Ceiling height and mounting. A mounting height that is ideal at 2.8 metres is close to useless at 12, because the antenna pattern that suits one puts most of its energy in the wrong place in the other.
- Device mix. Handheld scanners, voice-picking headsets, medical devices, tablets and laptops have different antennas, different transmit power and wildly different roaming behaviour. The design has to satisfy the least tolerant device on site, not the most.
- Density and load pattern. Forty people spread across a floor is a coverage problem. Four hundred people arriving in one hall at the same minute is a capacity problem, and the two are solved in opposite directions.
- How the space is used. Where people and equipment actually move determines where roaming has to be designed, and it is rarely the route a floor plan suggests.
Sector experience is not a substitute for measuring your building. It is what tells us what to look for while we are in it, and which of the things a floor plan does not show are likely to matter.
Where we work
Nine environments, nine different sets of problems. Pick the one that looks like your building.
Warehouse & Logistics
Racking, aisles, scanners and AGVs
Offices
Density, glass, plasterboard and video calls
Schools & Education
A class of devices in every room
Hospitality & Hotels
Guest Wi-Fi that doesn't generate complaints
Care Settings
Coexistence with nurse-call and telecare
Managed Property
Multi-tenant buildings and common parts
Marinas & Waterside
RF over water, salt and outdoor power
Events & Venues
High density, short notice, one chance
Retail
Scanners, EPOS and customer Wi-Fi
The method is the same everywhere
The environments differ. The way we approach them does not.
Nothing gets designed from an assumption
Every design starts from data — an on-site survey where the building exists, a predictive model where it does not yet. Access point counts derived from floor area are guesses, and in our experience they are usually low, which is exactly why they win quotes and disappoint afterwards.
The design has to be buildable
An access point position is only real if something can be fixed there, if power and data can reach it, and if somebody can get back to it later. Because we install our own designs, containment, cable routes, cabinet positions and access equipment are decided at design stage rather than discovered on the day.
Everything is designed for the least tolerant device
Signal thresholds, roaming behaviour and minimum data rates are set by the weakest device that has to work, whether that is a barcode scanner in an aisle or a handset in a corridor. Designing to a laptop and hoping is the single most common reason a network passes a heatmap test and fails in service.
We prove it afterwards
Every installation is re-surveyed on completion and compared against the design, and you get the evidence. That is what makes a coverage guarantee mean something.
The physical layer comes with it
Containment, Cat6A and fibre, cabinets, patching, labelling and PoE budget are part of the same programme, delivered by the same business — not a separate trade for you to coordinate. See structured cabling for what that involves.
Where a programme needs more hands on site to hit a date, we can draw on a broader range of engineers and installers through The Specialist Electrical Group rather than looking for a subcontractor at short notice. CHAS, Constructionline Gold, SafeContractor and TrustMark are held through the group and available to every project.
Tell us what the building is, and what isn't working.
Most conversations start with a symptom — scanners dropping, calls breaking up, complaints from one floor. A survey turns that into measured data, a design you can build to, and a number you can budget against.