attic condensation 2

https://austinroofingcompanyleakshop.juniperbrief.com/posts/how-to-spot-a-roof-leak-austin-roofing-company-leak-guide-for-homeowners

You notice water droplets forming on the attic's roof sheathing during cold weather, a sign of condensation. This happens when warm, moist air from the living spaces below rises into the unheated attic and hits the cold surfaces. Without proper ventilation or insulation, this moisture can soak into the wood, leading to mold growth and rot over time. Checking vents and sealing air leaks helps control the problem, but it's a common issue in older homes.