Frame, build-up and moisture control.
What carries the load, how the layers sit, and where the evidence is.
The load-bearing structure is steel, not a timber stud frame. The chassis is designed as part of the building rather than bolted on, because axle load, centre of gravity and lashing points all shape how the house survives transport.
Which process is used, and to which standard, is an order specification and appears per model in the technical data sheet attached to the quotation, together with the inspection record. No blanket product property is asserted here, because it has to be evidenced per batch and per component.
The three elements are stated separately because they do different jobs: the floor cassette loses heat to moving outside air, the roof takes the summer radiation, the wall sits between them. The layer sequence, materials and thicknesses are in the data sheet attached to the quotation.
The choice is made together with the destination climate. For summer performance in the roof, density matters — the denser the material, the longer the phase shift — while in the wall the priority is a continuous, gap-free installation. Which insulant is used in your order is fixed at specification.
U-values are calculated per element and per build-up and issued with the calculation. Until the calculation exists for your configuration we quote no figure: a U-value without its build-up is not information, it is an assertion.
Through three things that work together: a continuous vapour control layer taped at every penetration, resolved details wherever structure crosses the envelope, and continuously running ventilation with heat recovery. Remove any one of them and the other two are working against physics.
Model- and configuration-specific figures are stated in the technical data sheet attached to the quotation.