Yes, it is entirely normal for cold water supply pipes to sweat (form condensation) during hot, humid summer weather. When chilled groundwater flows through metal or plastic pipes, it cools the exterior pipe surface below the dew point of the surrounding warm, humid indoor air, causing moisture in the air to condense into droplets. While normal, persistent sweating can puddle on floors and promote mold growth if left uninsulated. Verification: Install closed-cell foam insulation sleeves to keep warm air away from cold pipe surfaces.
1 votes
Marked as accepted