Exterior Duct Joint or Support Creates a Water-Catching Low Spot

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?

Grease Duct, Kitchen & Industrial Exhaust 2nd Year YELLOW

Stop if

Stop before changing specialty exhaust, fire/life-safety work, shutdown conditions, controls, structural support, waterproofing, manufacturer-specific requirements, or occupied-space protection without the responsible direction.

Watch out

Do not drill a drain hole, crush insulation, or change roof supports without approval.

Check

current drawings and affected system tags
grid/location and measured conditions
photos showing the conflict or temporary condition
relevant equipment, hood, controls, roofing, or store information
what has already been checked

Say this to your foreman

exterior duct joint or support creates a water-catching low spot exterior duct low spot holds water rooftop joint support drainage ponding 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?

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