Apprentice question
Stop and ask
Stop. Get direction before you touch it.
Rusting rooftop hanger rods mean the material is wrong or unprotected. Hold/review the support and replace with approved exterior-rated hardware.
['Outdoor hanger hardware lives in weather, UV, chemicals, and sometimes coastal air. Raw or wrong hardware can lose thread strength fast.', 'Document the corrosion, check the spec/material schedule, and replace with approved galvanized, stainless, coated, or project-specified exterior hardware before the support is compromised.']