What a Thermal Image Proves — and What It Doesn’t
A thermal image gives you a ranking, not a measured value. Why it doesn't yield a U-value, how emissivity and colour scale distort results — and the four questions to ask of every image…
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Category: Bauphysik
Articles on building physics, application and cost-effectiveness.
Reading the Data Sheet: What V and W Classes Really Mean
DIN EN 1062-1 only classifies; the actual requirement sits in DIN 4108-3. Why V1 is good and W1 is bad, why the three limit…
Read articleSummer Thermal Performance: What DIN 4108-2 Requires
The solar gain index, the ranking of measures, and why west-facing windows are more critical than south-facing ones. A compliance issue, not a comfort…
Read articleWhat Emissivity Really Describes
Stefan-Boltzmann, Kirchhoff and the fourth power: what ε means, where a low emissivity demonstrably matters — and why colour tells you nothing about it.
Read articleWhy Mould Is Not Just a Heating Problem
It isn't room temperature that decides mould growth — it's the wall's surface temperature. Why the DIN 4108-2 threshold sits at 12.6 °C —…
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