Ing. Pavel Štajnrt
Construction Expert Witness
Case Studies

Selected projects from practice

Anonymised assessments with real outcomes. Click any card to read the diagnosis and conclusion.

[ Foto reference ] Building defects
Apartment building • Prague 6 • 2024

Cracks in external wall after thermal insulation

A year after polystyrene insulation, diagonal cracks appeared at window corners. Thermography and probes revealed insufficient anchoring and missing dilatation joints.

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[ Foto reference ] Thermography
Family house • Central Bohemia • 2024

Roof insulation defect claim

The investor claimed unexpectedly high heating costs in a new build. Thermography revealed systematic thermal bridges at the roof-to-wall connection.

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[ Foto reference ] Airtightness
Passive house • Brno • 2023

Failed n50 0.6 target on a passive house

A control Blower Door measurement revealed n50 = 1.4 vs. the design value 0.6. I identified 7 critical leak points; after repairs the building reached n50 = 0.55.

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[ Foto reference ] Daylight
Neighbour dispute • Pilsen • 2024

Daylight loss caused by neighbouring construction

Daylight factor assessment in an existing flat after construction of an adjacent building. The report demonstrated a drop below the limit required by ČSN 73 0580.

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[ Foto reference ] Building defects
Commercial building • Ostrava • 2023

Recurring basement moisture

Diagnosis of recurring basement moisture despite repeated waterproofing repairs. Probes revealed a combination of pressurised water and faulty drainage.

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[ Foto reference ] Thermography
Office building • Prague • 2024

Flat roof leak detection by thermography

Thermographic survey located the leak point without extensive probing. The investor saved 80 % of the cost compared to a full re-roofing.

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