Saddle tap is not sealed around the full perimeter

Treat a saddle tap like a real air connection, not just a piece sitting on round duct. Confirm the tap is seated to the duct, fastened correctly, sealed at the full perimeter, and supported so the joint does not peel open later.

Stop if

• This saddle tap is seated but I still need to seal the perimeter. What approved sealant/tape/mastic method do you want here before I close it up?

Watch out

• Do not leave the backside or heel of a saddle tap unsealed because it is hard to reach, and do not use mastic to hide a loose tap.

Check

• Verify the saddle/tap size and branch direction match the print or shop drawing.
• Check that the saddle sits tight to the round/spiral surface without rocking or gaps.
• Fasten per the approved shop/detail before sealing
• do not use sealant to hold a loose tap in place.
• Seal the full perimeter of the saddle/tap using the approved material and method.
• Support the branch so its weight does not pull the saddle/tap loose after startup.

Steps

• Verify the saddle/tap size and branch direction match the print or shop drawing.
• Check that the saddle sits tight to the round/spiral surface without rocking or gaps.
• Fasten per the approved shop/detail before sealing
• do not use sealant to hold a loose tap in place.
• Seal the full perimeter of the saddle/tap using the approved material and method.
• Support the branch so its weight does not pull the saddle/tap loose after startup.

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