Exterior Duct Joint or Support Creates a Water-Catching Low Spot
Verify the exterior duct elevation, support arrangement, joint orientation, weatherproofing system, and intended drainage before adding sealant or randomly lifting one hanger. Correct the cause without damaging the approved support or exterior insulation system.
This exterior run has a measured low spot holding water at the joint. I checked the adjacent supports, jacket, and roof pitch. Do you want the support elevation corrected, the exterior assembly reworked, or the condition reviewed against the approved detail first?
Watch out
Do not drill a drain hole, crush insulation, or change roof supports without approval.
Check
Measure the low spot from stable roof or structural references.
Check whether the duct, outer jacket, flashing, or support is creating the pocket.
Inspect nearby seams, penetrations, and insulation for water entry.
Confirm the approved adjustment and weatherproofing repair.
Steps
Measure the low spot from stable roof or structural references.
Check whether the duct, outer jacket, flashing, or support is creating the pocket.
Inspect nearby seams, penetrations, and insulation for water entry.
Confirm the approved adjustment and weatherproofing repair.
Say this to your foreman
This exterior run has a measured low spot holding water at the joint. I checked the adjacent supports, jacket, and roof pitch. Do you want the support elevation corrected, the exterior assembly reworked, or the condition reviewed against the approved detail first?