AI-generated cabin concept, used for illustration.
In this guide
Put the service routes on the same plan before installation starts. In a small A-frame, the easiest route for one trade may occupy the only usable route for another.
Review the congested places together
Start with the utility cupboard, bathroom, kitchen and the junction between the loft and ground floor. Mark the proposed routes, equipment envelopes and access spaces. Ask the designer to resolve structural openings and envelope penetrations; trades should not improvise cuts to make a route fit.
| Coordination point | Question to settle |
|---|---|
| Bathroom ceiling | Can the ventilation route coexist with the roof assembly? |
| Kitchen cabinetry | Are outlets, pipework and appliance connections accessible? |
| Utility cupboard | Can each item be serviced without dismantling another? |
| Loft floor | Which openings are approved in the structural design? |
Photograph with context
Before linings hide the work, arrange labelled photographs tied to the current drawings. Include room names and a clear reference point. A close-up of an unidentified pipe is much less useful than a wider image showing where it sits.
Photos supplement inspection and as-built records; they do not establish compliance or prove that an unseen connection is sound.
Close the open questions before covering
Keep a short list naming the issue, responsible person and evidence needed. For example, an unresolved bathroom duct outlet should remain open until the designer and installer agree the complete route, not merely because the fan has arrived.
Confirm required inspections with the project lead and local authority before work is concealed. Record the agreed outcome and revised drawings.
Use roof penetration planning, plumbing shutoff access and the project checklist for the connected decisions.