Content Gap Batch 9

Confirm Which Seams and Joints Get Sealed

Sealing, Leakage, Mastic & Pressure TestingVERIFYField judgment

Core Answer

Use the project seal class and duct-system requirements to identify the exact longitudinal seams, transverse joints, penetrations, and connections that require sealing.

Open in Field Rescue Open Category

What to Check First

Identify the system and pressure class
Find the project seal-class requirement
Separate factory seams from field joints and penetrations
Confirm special duct requirements
Mark inaccessible joints before they are covered

Ask Foreman

For this [system/pressure class], which seams and joints are included in the required seal class, and are there any exceptions on the detail?

Text to Foreman

Do Not Do This

Do not assume every seam gets the same treatment or copy the last job’s sealing pattern.

Why This Matters

Missed seams cause leakage; unnecessary sealant wastes labor and can interfere with listed or serviceable components.

Verify against: project specifications, approved drawings, applicable standard reference, foreman direction.