In short: most later door and condensation problems begin with the base, panel alignment or an unfinished joint.
Common mistakes include:
- building on an uneven or wet floor;
- using the wrong panel order;
- forcing edges or overtightening Cam-Locks;
- failing to check level, vertical and diagonals;
- leaving penetrations or plugs unsealed;
- mounting heavy equipment without proper support;
- skipping commissioning and safety tests.
A crooked door may be the final symptom of a floor or wall error. Fix the first cause rather than repeatedly adjusting the latch.
Why installation mistakes are so costly
A cam-lock cold room is a single thermal envelope. Every joint, seal, and panel either keeps heat out or lets it in — there is no redundancy. A defect that would be cosmetic in dry construction becomes a continuous energy leak here, and many defects are locked in the moment the cams are tightened. Correcting an out-of-plumb wall after the ceiling is on can mean dismantling half the room.
The mistakes compound: an unlevel floor guarantees leaning walls, which guarantee a poorly seating ceiling and a door that will not seal. Catching the first error prevents the cascade.
The seven assembly mistakes at a glance
| # | Mistake | Primary consequence | The fix | Covered in |
|---|---|---|---|---|
| 1 | Building on an uneven floor | Rocking panels, leaning walls, gaps | Verify ±3 mm/m before any panel | Structural mistakes |
| 2 | Forcing misaligned panels | Damaged groove, crushed gaskets | Stop, clear, realign — let the cam pull | Structural mistakes |
| 3 | Skipping plumb checks | Cumulative lean; nothing fits | Check plumb on every panel | Structural mistakes |
| 4 | Incomplete cam-lock engagement | Gaskets don't compress; joints loosen | Turn until resistance rises sharply | Structural mistakes |
| 5 | Ignoring door alignment | Uneven gasket, continuous leak, frost | Set frame plumb and square; test closure | Door, sealing & commissioning |
| 6 | Inadequate sealing | Air infiltration, in-panel condensation | Seal every internal joint and penetration | Door, sealing & commissioning |
| 7 | No commissioning test | Faults found after the installer leaves | Run a full pull-down and leak test | Door, sealing & commissioning |
A separate design-stage error — sizing refrigeration on room volume alone — is covered in Refrigeration sizing mistakes.
The common thread
| Symptom on a finished room | Mistake that caused it |
|---|---|
| Door ices up / won't seal | Unlevel floor (1), no plumb checks (3), or door misalignment (5) |
| Compressor runs non-stop | Air leaks from poor sealing (6) or refrigeration under-sizing |
| Condensation inside panels | Incomplete sealing (6) or forced/crushed gaskets (2) |
| Joints loosen over months | Incomplete cam-lock engagement (4) |
| Disputes after handover | No commissioning test (7) |
Every entry is preventable, and they all trace back to the same habit: skipping a check to save minutes. Take the time — check every panel, seal every joint, and test before you leave.
For the correct build order that prevents most of these faults, see Assembly process: step-by-step, and prepare the site using Site preparation.
The MTH Algor assembly card closes with a one-page "five most expensive assembly mistakes" sheet — mistakes 1 to 5 above, each with its fix, laid out to print and hand to the crew before they open the first pallet: download the documents.
Related articles
- Structural assembly mistakes (floor, panels, plumb, cam-locks)
- Door, sealing & commissioning mistakes
- Refrigeration sizing mistakes
- Before you begin: site preparation
- Assembly process: step-by-step
- Panel specifications
Guidance reflects the MTH Algor cam-lock panel system supplied by Frostbox. For project-specific installation queries, commissioning support, or a heat-load review, contact [email protected].
