How does factory construction affect energy and thermal performance?
Every building is designed to a thermal standard. The gap between the design and the built result is where performance is won or lost.
How does factory construction affect energy and thermal performance?
The design standard is the same under the National Construction Code. The difference is execution. Insulation fitted without gaps, sealing completed in dry conditions and junctions detailed consistently close the gap between designed and actual performance, which is where most on-site thermal underperformance originates.
A building's energy performance is calculated at design and delivered at construction, and the two are frequently not the same building.
The calculation assumes insulation is continuous, that sealing is complete, and that junctions are built as detailed. Every one of those assumptions is an execution question.
Where on-site thermal performance is lost
Insulation compressed, gapped or omitted where a service crosses it. This is the single largest cause and it is invisible once the lining goes on.
Sealing incomplete at junctions, penetrations and around openings, so conditioned air leaves and unconditioned air enters through paths nobody designed.
Materials installed wet, or exposed to weather before they are enclosed, which degrades insulation performance before the building is even occupied.
Junction details simplified in the field because the designed version was awkward to build in position.
None of these are failures of intent. They are the predictable result of building a precise assembly outdoors, at height, in variable conditions, under time pressure.
What a controlled environment changes
Work happens at a fixed station rather than in position. Insulation is fitted with access to both sides, at a workable height, and inspected before it is covered.
Nothing is installed wet, because the environment is climate-controlled from the start.
Junction details are built the same way every time, because the same station builds them repeatedly to the same documentation rather than being interpreted by whoever is available that day.
The result is not a different standard. It is the designed standard actually delivered, which for thermal performance is the whole argument.
Steel and thermal bridging
The structural frame is powder-coated galvanised steel, and steel conducts heat. Thermal bridging through a steel frame is a real consideration and it is a design problem with a design answer: the insulation strategy has to break the path rather than sit between the members.
This is well understood and it is detailed at design stage. It is worth stating plainly because it is the obvious technical question about a steel-framed system, and the answer is that it is handled in the detailing, consistently, because the detailing is executed in controlled conditions.
Air tightness
Air leakage is increasingly the difference between a building that performs and one that does not, and it is the property most sensitive to workmanship.
A sealed assembly built indoors, checked before enclosure, is a more reliable result than the same assembly built outdoors and sealed after the fact.
What this means for an operator
For accommodation held long term, thermal performance is an operating cost and a resident comfort question rather than a compliance line.
A dwelling that holds its temperature costs less to run for its whole life and is more comfortable to live in every day of it. For supported accommodation where residents may be home most of the day, that is not a marginal consideration.
The compliance framework sets the minimum. The execution decides what the resident actually experiences.
Discuss your project and we will talk through the specification.
MADEmodular / MADEbetter.
MADEmodular / MADEbetter.