Video wall installation for new construction

Why this page exists

Video wall installation for new construction is shaped by how the space is used, not just by the service itself. New construction bring their own operating constraints, and this page pairs what video wall installation actually involves with what that environment changes about it.

A video wall is an array of thin-bezel panels driven so that content spans them as a single image. What makes it a distinct discipline from hanging displays is precision: the panels have to align to a fraction of a millimetre, the thin gaps (mullions) between them have to be compensated so the image reads as continuous, a processor has to split and scale content across the array, and the whole wall has to stay serviceable when one panel needs attention.

One window, and it does not reopen

Low-voltage rough-in happens in a specific slot: after framing and electrical, before insulation and drywall. Inside that window, running a cable anywhere is straightforward. Once drywall goes up, the same cable costs many times more and sometimes cannot be run at all.

The asymmetry is the whole story of new-construction low voltage. Decisions made cheaply during rough-in become expensive or impossible afterwards, which is why the pre-rough-in planning conversation is worth more than any equipment choice made later.

• Rough-in window sits between electrical and drywall
• Upstream delays compress the window without extending the deadline
• Post-drywall changes cost many times more, if they are possible at all
• Finish work happens months later, after paint and ceilings

What video wall installation usually involves

The defining problem is precision. Consumer-mounting practice is nowhere near tight enough — panels have to be co-planar and aligned so a horizontal line crosses the seams without stepping, which needs mounts with fine micro-adjustment and careful setting. A wall that looks 'close' reads as broken.

The second is the system behind it: without a proper video-wall processor, content is not split and scaled correctly across the array and the mullions are not compensated, so the image looks like separate screens rather than one. And thermal and service access — panels generate heat and eventually need attention — has to be designed in, or maintenance becomes a demolition job.

• Panels not co-planar or aligned, so lines step across the seams
• Colour mismatched between panels, breaking the single-image look
• No processor, so content is not split, scaled, or mullion-compensated
• Heat build-up in a tightly packed array
• No service access, so one panel means dismantling the wall
• Consumer mounts without the fine adjustment a wall needs

What to rough in even without a final design

Full system design is often not finished when the rough-in window arrives. That is normal, and it is not a reason to skip the pathway. Running conduit or sleeves to likely positions preserves the option cheaply even when the eventual equipment is undecided.

For a commercial building, the reliable rough-in set is: cable to every likely device outlet, ceiling positions for access points spaced for the intended coverage, camera positions at entries and approaches, door positions with cable to the controller location, and pathway to any likely display or AV position. Plus, in every case, a properly located equipment room.

The equipment room deserves particular emphasis because it is the most commonly under-provisioned item. It has to hold the network rack, camera recorder, access-control panel, and any AV equipment, with dedicated power, ventilation, and clearance to work. Sizing it from the network alone is a decision that gets discovered eighteen months later.

• Sleeves and conduit to likely positions even before final design
• Ceiling access-point positions spaced for the intended coverage
• Camera positions at entries, approaches, and service areas
• Cable from every controlled door to the controller position
• Equipment room with dedicated power, ventilation, and working clearance

Precision mounting, the processor, calibration, and service

Video-wall mounts are built for the job: they hold panels co-planar and provide micro-adjustment in every axis so each panel aligns to its neighbours to a fraction of a millimetre, and many pull the panel forward for service access. Setting the array flat and aligned is painstaking and is most of the installation's skill — it is what makes the seams disappear into a single image.

• Video-wall mounts with fine micro-adjustment, holding panels co-planar
• Panels aligned to a fraction of a millimetre across the array
• A processor to split, scale, and mullion-compensate content
• Colour and brightness calibration for a uniform image
• Heat managed for the packed panel environment
• Pull-out or serviceable mounting for single-panel access

Frequently asked questions