TM52 report and overheating assessment
A TM52 report documents an overheating assessment for applicable occupied spaces, commonly in naturally ventilated non-domestic buildings, using adaptive thermal comfort criteria and a controlled thermal model.
A TM52 report documents an overheating assessment for applicable occupied spaces, commonly in naturally ventilated non-domestic buildings, using adaptive thermal comfort criteria and a controlled thermal model.
What this report needs to prove.
The page targets “TM52 report” while keeping the report-template query on its own page.
TM52 versus TM59
TM52 addresses thermal comfort and overheating in applicable buildings, while TM59 provides a residential design-stage methodology. The project brief decides the correct route.
Assessment boundary
The report should define the occupied spaces, operating periods, ventilation mode, weather file, comfort category and any exclusions before results are presented.
Decision trail
Criteria results need supporting assumptions, plots, failed-space commentary, mitigation changes and a conclusion that does not hide marginal cases.
How to prepare the assessment and report.
Use controlled source information, keep each modelling decision traceable and obtain competent-person review before issue.
Set the comfort brief
Agree the building use, occupied periods, comfort category, applicable criteria, weather basis and spaces to be assessed.
Coordinate the model
Check geometry, fabric, gains, occupancy, ventilation openings, controls and mechanical systems against the current design.
Run the summer assessment
Export the occupied-space results and the data needed to test each applicable TM52 criterion.
Investigate the governing spaces
Review peaks, duration and severity of discomfort, then test practical passive and control measures.
Issue an auditable conclusion
State which spaces pass or fail, the mitigation included, model limitations and any actions carried into later design stages.
Information to gather before you start.
Missing inputs should remain visible as review items. They should not be replaced with convenient assumptions without approval.
| Input group | Source information | Why it matters |
|---|---|---|
| Thermal comfort brief | Building use, occupied hours, comfort expectations and project criteria | Sets the assessment target |
| Model geometry and fabric | Zones, adjacency, constructions, glazing, shading and thermal mass | Defines heat transfer and solar gains |
| Ventilation and controls | Openings, free areas, schedules, wind or stack assumptions and control logic | Defines adaptive opportunities |
| Internal loads | People, lighting, equipment and operating profiles | Defines occupied heat gains |
| Weather data | Declared design summer year and location basis | Supports repeatable simulation |
| Criteria outputs | Occupied hours, operative temperatures, running mean data and space results | Supports the TM52 review |
What the issued report should contain.
Use the separate template page when the search task is to find the report layout rather than understand the assessment.
| Section | Required coverage |
|---|---|
| Executive summary | Scope, assessment basis, headline results, failed spaces and design actions. |
| Building and comfort brief | Use, occupancy, ventilation mode, comfort category, project stage and assessment boundary. |
| Model basis and QA | Software, weather file, zoning, fabric, gains, schedules, openings, controls and checks. |
| TM52 criteria results | Space-by-space results for each applicable criterion with clear pass, fail and review states. |
| Mitigation study | Solar control, ventilation, thermal mass, internal-gain and control changes with rerun evidence. |
| Conclusion and limitations | Final design basis, residual risk, assumptions needing confirmation and reviewer sign-off. |
Standards and guidance to check.
The project team must confirm the current edition, jurisdiction, contractual requirements and authorised access to each publication.
- CIBSE TM52The active CIBSE technical memorandum explains adaptive thermal comfort and criteria for identifying overheating.
- CIBSE AM11AM11 covers thermal environment modelling, ventilation modelling and quality assurance.
Prepare the report in Adelphos Chat.
Collect the inputs, identify missing evidence and build the report structure now. Report Studio templates are being prepared for release.
TM52 report and overheating assessment questions
What does a TM52 report show?
It shows the assessment basis and the results for each applicable overheating criterion, supported by the thermal model assumptions, occupied periods, weather data and mitigation evidence.
Is TM52 only for naturally ventilated buildings?
TM52 is widely used for naturally ventilated buildings because it uses an adaptive comfort approach. The modeller must confirm whether TM52 is appropriate for the space and project brief.
What is the difference between a thermal model and a TM52 report?
The thermal model is the simulation. The TM52 report is the controlled technical record that explains the model, applies the criteria, presents results and records the conclusion.
Does Adelphos replace a competent thermal modeller?
No. Adelphos can organise inputs, results and report sections, but the modeller is responsible for model quality, criteria application and issue.
Continue with the evidence.
Move between the technical guide, the report structure and the calculation tools without mixing their search intent.
Adelphos structures declared evidence and report content. A competent person remains responsible for the model, calculations, standards, assumptions, interpretation, coordination and issued conclusion.