Sealing, Leakage, Mastic & Pressure Testing

171 records, red lane first.

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A large louver bank is set on raw concrete with no sill pan
Field problem · 4th Year
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Foreman said use mastic and fabric but I do not know the sequence
Field problem · 4th Year
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How many weld pins do I need per square foot when installing internal acoustic liner?
Apprentice question · 1st Year
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I do not know whether to use mastic or tape on this joint
Field problem · 4th Year
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Leakage-Test Pressure: Verify the Test Plan Before Pressurizing
Field problem · 4th Year
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Leakage-Test Pressure: Verify the Test Plan Before Pressurizing
Foreman script · 2nd Year
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Louver head flashing is reverse-lapped over the building wrap
Field problem · 4th Year
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Pressure test is live and I found an inaccessible leak above ceiling
Field problem · 4th Year
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Pressure-Test Safety Around Temporary Caps and Closures
Field problem · 4th Year
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Pressure-Test Safety Around Temporary Caps and Closures
Foreman script · 1st Year
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Test Section Setup: Caps, Doors, Dampers, and Temporary Seals
Field problem · 4th Year
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Test Section Setup: Caps, Doors, Dampers, and Temporary Seals
Foreman script · 2nd Year
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The mastic is skinned over, stringy, frozen, or does not look right
Field problem · 4th Year
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Wrong pressure class duct was installed and now needs rework scoped
Field problem · 4th Year
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A duct seam pops open during a pressure/leak test
Field problem · 2nd Year
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A factory spiral gasket tears during install
Field problem · 2nd Year
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A factory spiral seam whistles during pressure test
Field problem · 2nd Year
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A multi-section louver leaks at the vertical mullion splice
Field problem · 2nd Year
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A return duct main sucks inward during startup
Field problem · 2nd Year
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A round reducer blows off under airflow
Field problem · 2nd Year
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A spiral slip joint pops apart during a pressure test
Field problem · 2nd Year
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Applying mastic sealant unevenly or missing interior joints entirely
Common mistake · 2nd Year
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Approving a duct joint for concealment that has visible gaps or missing sealant
Common mistake · 2nd Year
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Around access door frame not sealed
Field problem · 2nd Year
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Around takeoffs and collars not sealed
Field problem · 2nd Year
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Butyl gasket tape was stretched thin on a TDC/Ductmate flange
Field problem · 2nd Year
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Confirm Which Seams and Joints Get Sealed
Field problem · 2nd Year
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Confirm Which Seams and Joints Get Sealed
Foreman script · 1st Year
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Corners of TDC/Ductmate joint not sealed
Field problem · 2nd Year
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Do I need to seal the longitudinal seams, or just the transverse joints?
Apprentice question · 1st Year
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Do you want me to mark and fix the leak path before recheck
Foreman script · 3rd Year
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Do you want me to mark and fix the leak path before recheck
Foreman script · 3rd Year
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Do you want me to mark and fix the leak path before recheck
Foreman script · 3rd Year
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Do you want me to mark and fix the leak path before recheck
Foreman script · 3rd Year
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Do you want me to mark and fix the leak path before recheck
Foreman script · 3rd Year
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Do you want these holes patched/sealed before test or cover
Foreman script · 3rd Year
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Does this access door need sealing or adjustment before cover
Foreman script · 3rd Year
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Duct Leakage Class Requirements
Field problem · 2nd Year
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Duct Leakage Class Requirements
Foreman script · 2nd Year
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Duct Leakage Test Preparation
Field problem · 2nd Year
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Duct Leakage Test Preparation
Foreman script · 2nd Year
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Duct Sealer Selection
Field problem · 2nd Year
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Duct Sealer Selection
Foreman script · 1st Year
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Exterior and UV-Rated Duct Sealant Verification
Field problem · 2nd Year
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Exterior and UV-Rated Duct Sealant Verification
Foreman script · 1st Year
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Failing to seal all duct joints with mastic or foil tape per code
Common mistake · 2nd Year
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Gaps left at S-and-drive corners
Field problem · 2nd Year
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How do I apply fiberglass mesh tape with mastic without it wrinkling?
Apprentice question · 1st Year
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How do I apply water-based mastic when it's freezing cold on the jobsite?
Apprentice question · 1st Year
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How do I correctly staple and tape the vapor barrier on duct wrap?
Apprentice question · 1st Year
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How do I fix a spiral slip joint that popped during pressure test?
Apprentice question · 3rd Year
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I got mastic or sealant everywhere and need damage control
Field problem · 2nd Year
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Ignoring duct leakage class requirements on a high-pressure system above 3 inches WG
Common mistake · 2nd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Is this joint ready for the approved seal method, or should I fix the fit first
Foreman script · 3rd Year
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Joint opens after lift because duct unsupported
Field problem · 2nd Year
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Large Duct Gap Needs a Mechanical Fix or Approved Reinforcement
Field problem · 2nd Year
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Large Duct Gap Needs a Mechanical Fix or Approved Reinforcement
Foreman script · 1st Year
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Large Duct Gap: Repair the Joint Before Adding Mesh and Sealant
Field problem · 2nd Year
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Large Duct Gap: Repair the Joint Before Adding Mesh and Sealant
Foreman script · 1st Year
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Leak Walk Before Repairing Duct
Field problem · 2nd Year
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Leak Walk Before Repairing Duct
Foreman script · 1st Year
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Leakage at access door/frame
Field problem · 2nd Year
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Leakage at equipment collar
Field problem · 2nd Year
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Leakage test failed and needs repair walk
Foreman script · 4th Year
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Longitudinal seam when required not sealed
Field problem · 2nd Year
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Louver perimeter caulk cracks because there is no backer rod
Field problem · 2nd Year
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Manufacturer cure time not checked
Field problem · 2nd Year
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Mastic and fabric sequence
Foreman script · 2nd Year
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Mastic applied over dirty/oily duct
Field problem · 2nd Year
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Mastic looks bad
Foreman script · 2nd Year
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Mastic or tape choice
Foreman script · 1st Year
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Mastic vs Tape: Confirm the Approved Sealing System
Field problem · 2nd Year
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Mastic vs Tape: Confirm the Approved Sealing System
Foreman script · 1st Year
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Measuring from the wrong reference point on the tape (the hook gap error)
Common mistake · 2nd Year
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Mis-transferring measurements from a tape to a shop drawing (transposing digits)
Common mistake · 2nd Year
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Misreading a tape measure - confusing 1/16" marks with 1/8" marks
Common mistake · 2nd Year
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Missed seams on round/spiral fittings
Field problem · 2nd Year
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Missing mastic at flange corner
Field problem · 2nd Year
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Not completing a duct leakage test before concealing work in a ceiling
Common mistake · 2nd Year
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Not identifying pressure class before sealing method
Field problem · 2nd Year
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Not reviewing the MSDS/SDS sheet for a new sealant or flux being used on the job
Common mistake · 2nd Year
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Not testing/inspecting above ceiling before close-up
Field problem · 2nd Year
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Notching corners of a box incorrectly, leaving a gap that requires excessive caulking
Common mistake · 2nd Year
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Pre-Test Leak Walk
Field problem · 2nd Year
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Pre-Test Leak Walk
Foreman script · 2nd Year
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Prepare One Duct Section for Leakage Testing
Field problem · 2nd Year
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Prepare One Duct Section for Leakage Testing
Foreman script · 1st Year
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Pressure test fails because accessible joints were skipped
Field problem · 2nd Year
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Pressure test leak hidden behind wall
Field problem · 2nd Year
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Push back on foreman direction
Foreman script · 4th Year
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Screw holes or unused holes not sealed
Field problem · 2nd Year
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Sealant Cure Time Before Pressure Test
Field problem · 2nd Year
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Sealant Cure Time Before Pressure Test
Foreman script · 1st Year
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Sealant applied in wet/dusty conditions
Field problem · 2nd Year
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Sealant blocks the louver weep holes
Field problem · 2nd Year
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Sealant cracking because joint moves/stressed
Field problem · 2nd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Should I verify the seal/test requirement before covering this
Foreman script · 3rd Year
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Smearing mastic over bad mechanical connection
Field problem · 2nd Year
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Tape peeling because surface was dusty
Field problem · 2nd Year
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Temporary Test Caps And Plugs
Field problem · 2nd Year
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Temporary Test Caps And Plugs
Foreman script · 2nd Year
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The duct leakage test failed and I need to find the leak
Field problem · 2nd Year
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Thin bead of mastic not bridging gap
Field problem · 2nd Year
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Thinking leak test is someone else's problem
Field problem · 2nd Year
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UL 181-rated material where required not used
Field problem · 2nd Year
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Using tape alone where mastic/spec requires more
Field problem · 2nd Year
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What approved seal material/detail applies here
Foreman script · 3rd Year
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What do I do if I accidentally poke a hole in the insulation vapor barrier?
Apprentice question · 1st Year
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What does it mean when a duct seam pops during pressure testing?
Apprentice question · 3rd Year
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What is the proper overlap for duct wrap (blanket insulation) on commercial jobs?
Apprentice question · 1st Year
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What test requirement applies here, and do you want this checked before cover
Foreman script · 3rd Year
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What test requirement applies here, and do you want this checked before cover
Foreman script · 3rd Year
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What test requirement applies here, and do you want this checked before cover
Foreman script · 3rd Year
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What's the clean-up procedure for getting mastic off my tools (and hands)?
Apprentice question · 1st Year
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What's the difference between water-based mastic and solvent-based duct sealant?
Apprentice question · 1st Year
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What's the trick to cutting duct liner so the edges don't fray?
Apprentice question · 1st Year
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Why does louver perimeter sealant split when backer rod is skipped?
Apprentice question · 2nd Year
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Why would a large return duct implode or oil-can during commissioning?
Apprentice question · 4th Year
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Wrong tape/sealant for system
Field problem · 2nd Year
Coordinate
Not documenting repaired leaks for punchlist
Field problem · 3rd Year
Coordinate
Sealant blocks damper operation/access
Field problem · 3rd Year
Coordinate
Sealed joints before cure not protected
Field problem · 3rd Year
Coordinate
Sealing after insulation makes leak repair hard
Field problem · 3rd Year
Standard
A duct-to-louver sleeve joint leaks because gasket tape was skipped
Field problem · 1st Year
Standard
A round saddle tap does not match the spiral pipe curvature
Field problem · 1st Year
Standard
Air leaks around a volume damper frame inside a wall sleeve
Field problem · 1st Year
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Air leaks out around a VAV reheat coil casing
Field problem · 1st Year
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Air-balance test-hole caps blow out under pressure
Field problem · 1st Year
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An adjustable 45-degree elbow leaks because a gore is not nested right
Field problem · 1st Year
Standard
Clean and Dry the Surface Before Sealant
Field problem · 1st Year
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Clean and Dry the Surface Before Sealant
Foreman script · 1st Year
Standard
Companion ring bolt holes stretch and the gasket tears
Field problem · 1st Year
Standard
Ductwork Cleanliness Before Sealing
Field problem · 1st Year
Standard
Ductwork Cleanliness Before Sealing
Foreman script · 1st Year
Standard
How do I avoid the exploding polyurethane mastic bucket base?
Apprentice question · 1st Year
Standard
How do I seal air balance test holes that blow out caps?
Apprentice question · 3rd Year
Standard
Leak Walk: Mark the Leak Before Smearing Sealant Everywhere
Field problem · 1st Year
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Leak Walk: Mark the Leak Before Smearing Sealant Everywhere
Foreman script · 1st Year
Standard
Mastic Application Thickness
Field problem · 1st Year
Standard
Mastic Application Thickness
Foreman script · 1st Year
Standard
Mastic Cure Hold Point Before Leakage Testing
Field problem · 1st Year
Standard
Mastic Cure Hold Point Before Leakage Testing
Foreman script · 1st Year
Standard
Mastic peels off oily factory metal
Field problem · 1st Year
Standard
Mastic was applied too thick and messy
Field problem · 1st Year
Standard
Mastic will not stick to oily or wet duct metal
Field problem · 1st Year
Standard
Spiral coupler screws strip out and leak
Field problem · 1st Year
Standard
Why does a volume damper leak when it is bolted metal-to-metal into a sleeve?
Apprentice question · 2nd Year
Standard
Why does caking mastic on too thick not make a better seal?
Apprentice question · 1st Year
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Why is duct mastic peeling off oily or wet metal?
Apprentice question · 1st Year
Standard
Why should metal be wiped clean before applying mastic?
Apprentice question · 1st Year
Reference
Butyl Gasket Line
Reference · 1st Year
Reference
Mastic and Sealant Basics
Reference · 1st Year
Reference
Photo with the tape visible
Reference · 1st Year
Reference
Read the tape without guessing fractions
Reference · 1st Year