How is quality controlled in a factory build?

Ask what factory construction changes and most answers are about speed. The more consequential change is what can be checked.

Why a site limits inspection

On a construction site, work happens once, in whatever conditions exist that day, often at height, frequently in an awkward position, and it is covered by the next trade shortly afterwards.

An inspection is a person arriving at a point in time and looking at what is visible. What was already closed up is inferred.

That is not a criticism of site trades. It is a structural limitation of building outdoors in sequence, and everybody in the industry works within it.

What a controlled environment changes

Work happens at a fixed station, at a workable height, with access to both sides, under consistent light.

Which means the same connection is built the same way every time, by a team doing that one operation, to the same documentation, rather than being interpreted by whoever was available.

And it means the work can be inspected before it is enclosed, at the point where a correction is cheap.

What gets checked, and when

**Dimensional.** Every module is built to fixed dimensions because it has to meet a foundation and a neighbouring module that were made separately. Set-out is checked at the frame stage rather than discovered at installation.

**Structural connections.** Inspected while they are visible, which on a site is a narrow window and in a factory is a scheduled stage.

**Services rough-in.** Located, tested and recorded before the linings go on. Pressure testing a module's hydraulic services inside the factory is far easier than tracing a fault after installation.

**Waterproofing.** Applied in dry conditions and inspected before anything covers it.

**Insulation and sealing.** The two items most often compromised on site, and the two where inspection before closing is the whole difference.

**Finishes.** Checked in a controlled environment rather than after the building has been open to weather.

Tolerance is the measurable difference

Conventional construction absorbs variation. A frame accommodates a slab that is slightly out, a wall gets packed, a trade adjusts.

Volumetric modular cannot rely on that, because the modules are made before they meet anything. So the tolerance has to be tighter, and it has to be held rather than aspired to.

That constraint is often described as a difficulty. It is the reason the finished quality is higher, because a process capable of holding a fine tolerance is a process under control.

The record

Factory production generates traceability automatically. Which module, built when, to which drawing revision, inspected by whom, against what.

That record matters to three people. A certifier, who can see the evidence rather than take the assurance. A financier, for whom demonstrable process is a risk question. And an operator, who will maintain the building for decades and benefits from knowing what is behind each wall.

Reproducing that trail on a site is possible and it is a great deal harder.

Why the standard is set where it is

Made develops every project to the Specialist Disability Accommodation standard, the highest compliance bar in low-rise construction.

Building every stream to that bar means the process has to be capable of demonstrating compliance rather than asserting it, on every project, including the ones where the standard is not required.

That is what makes the compliance framework a manufacturing question rather than a paperwork one.

Discuss your project and we will walk through the inspection stages.

MADEmodular / MADEbetter.