The Problem
Brand new home had pressure loss in the in-floor radiant heating system. Builder couldn't find the leak — concrete was already poured and finished.
Detection Method
Thermal imaging while heating system was pressurized and running. Identified a clear temperature anomaly at a suspicious fitting connection. GPR confirmed the pipe path.
Results
200mm patch at fitting. Loose connection was tightened. System held pressure. Builder avoided the cost of repouring the entire slab.