Condensation plays the same role in “modern” roofing practice as “bad spirits” did in medieval times. If something went wrong, you blamed the bad spirits. Nowadays, if a roofing system is not working, it’s due to “condensation”. So let’s get into it and understand what condensation is, when can it appear in a roof system, and what corrective action you can and should take if condensation is really the cause of an apparent leakage.
Consulting PG 