Enhanced Hygrothermal Moisture Risk Calculator
Hourly transient simulation using real ERA5 climate data — more accurate than steady-state Glaser for borderline constructions. Includes hygroscopic buffering. Explicitly simplified: not a WUFI / BS EN 15026 full simulation.
Hourly ERA5 dataHygroscopic bufferingISO 13788 diffusionOpen accessAny location
Why use this instead of the Glaser calculator?
This calculator uses 8,760 hourly data points (one full year) instead of 12 monthly means. It catches cold snaps, detects drying opportunities in mild spells, and accounts for hygroscopic materials absorbing moisture before damage occurs. For borderline Glaser results, this gives a more defensible verdict.
Materials
Teal number = hygroscopic buffer (w80, kg/m³)
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Wall
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| # | Layer (inside to outside) | Thick. (mm) | lambda | mu | sd (m) | w80 | |
|---|---|---|---|---|---|---|---|
| — | Internal surface (Rsi) | 0.13 | |||||
| 1 | 0.100 | 12 | |||||
| 2 | 0.100 | 1 | |||||
| 3 | 3.440 | 30 | |||||
| — | External surface (Rse) | 0.04 | |||||