Refurb and Restore Issue 48 2026 | Page 8

MEASURE BEFORE YOU MODERNISE

How environmental monitoring can help refurbishment teams understand building performance and make better-informed decisions.
Refurbishment projects are often planned from drawings, surveys, calculations and brief site visits. Each contributes valuable information, but none necessarily shows how indoor conditions change through occupation, weather or time of day. Without that evidence, teams can risk treating symptoms rather than understanding how a building behaves.
Establish the baseline
Monitoring temperature and relative humidity before work begins creates a reference point for later comparison. It can reveal differences between rooms, floors and orientations, or show whether an apparent problem is occasional, seasonal or persistent. This context can help project teams define the question they need the refurbishment to address.
A useful study begins with representative locations and a suitable monitoring period. Loggers should be kept away from direct sunlight, local heat sources and unrepresentative draughts unless these are the subject of the investigation. Notes on occupancy, heating schedules and significant weather or operational events can make the resulting trends easier to interpret.
Measure through change
Where practical, monitoring during the project can show how conditions respond as heating, ventilation, insulation, glazing or internal layouts change. The same locations can then be monitored after completion to assess the difference under everyday use.
A fair comparison requires context. A warmer room does not automatically demonstrate a successful intervention, and relative humidity data alone cannot diagnose damp, condensation or defects in the building fabric. Findings should be considered alongside professional surveys, moisture measurements, knowledge of the building and the way occupants use it.
Turn results into learning
Post-work data can support commissioning and handover conversations, highlight areas needing further investigation and provide evidence for clients or estates teams. It can also help architects, contractors and surveyors carry lessons from one project into the next.
Compact standalone equipment can make this approach practical without permanent monitoring infrastructure. Tinytag Ultra 2 data loggers include options for indoor temperature and relative humidity monitoring in generally dry environments, along with integral and external sensing arrangements for different measurement points. Recorded information can be reviewed in Tinytag Explorer to compare locations and identify trends.
The product is only one part of the process. The value comes from defining the right question, selecting meaningful locations and interpreting the evidence carefully.
Refurbishment should not end when the work is signed off. By measuring before and after intervention, project teams can better understand whether a building has changed as intended— and use that knowledge to make the next modernisation more informed.
To find our more information about indoor environmental monitoring, visit www. geminidataloggers. com / building-monitoring
8- REFURB & RESTORE