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Initial Inspection

Follow-Up Inspection

Description of Location


Scrap material picked up

Proper PPE being worn


All unused duct hangers are removed

Ductwork wrapped when in storage or until final connection is made

Transfer duct in place at full height walls for return air using fiberglass duct board

Verify all balancing/volume dampers are installed in the open position

Verify volume dampers are installed on all exhaust duct taps to an exhaust grille

All volume dampers are installed on taps downstream of VAVs and FPBs

No damaged or dented ductwork

No ductwork installed over electrical panels or equipment

Sounds and fire caulking in place (Hilti CP 680)

Verify all duct joints and holes in the duct are sealed

36" wide duct and greater- pitch insulation to prevent water ponding

Hangers and supports installed outside insulation. Where gripple is used, ensure that the break in insulation is neatly taped over to hide the gripple

Outdoor ductwork- extend to inside face of outside wall and finish w/ (2) coats of Armaflex

Access doors open against system air pressure

Sheet metal flanges used where duct passes through interior partitions below ceilings and at exterior walls

All horizontal duct Leaving grease exhaust shall be pitched a 1/4"/ foot

Flexible ductwork shall not be less than 4' or more than 12'

Exposed mounting screws shall be pointed to match frame orientation

Duct supports hung straight and free of kinks or bends

Ducts held close to wall, overhead construction and other permanent enclosure elements

Conical or tapered taps with balancing dampers on all round ductwork take offs (except upstream of VAVS)


Ductwork insulation per table

Insulation installed with smooth and even surfaces

Neatly beveled edge at interruption of insulation

All duct components (fire dampers, silencers, valves, etc.) are insulated

Ductwork insulation extended through all penetrations(walls, floors, ceilings, etc.)

All duct liner is not ripped and dry

Provide 1" clearance outside of insulation

Verify insulation on rectangular duct over 24" has pins in the bottom of insulation to prevent sagging. Pins should be taped over following installation

Verify insulation is not over compressed (I.e. 1.5" compressed below 1")

Install grease duct so a min. Of 6" and a max of 12" is maintained between duct and enclosure

Flexible Connections

Flexible duct connections installed at fan unit intake and discharge

Clear length equal between duct and fan around perimeter of opening

Fabric stretched taut

No metal-to-metal contact


Ductwork identified at 50' spacing, where exposed, where concealed by removable ceiling, and where it originate or continues into concealed enclosures

Ductwork identified with service and direction of flow in black or white stencil

All access doors identified with purpose and other instructions

Verify air flow is correctly indicated and clearly marked on all air terminal units


Contractor drawings are current set with applicable changes posted

Photos attached

BIM drawings attached

Details attached

Incomplete items moved to QUIT log?

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Additional Comments

Mortenson Signature
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RK Signature
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Additional Witnesses
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Please note that this checklist is a hypothetical example and provides basic information only. It is not intended to take the place of, among other things, workplace, health and safety advice; medical advice, diagnosis, or treatment; or other applicable laws. You should also seek your own professional advice to determine if the use of such checklist is permissible in your workplace or jurisdiction.