Ductwork Cleanliness Before Sealing

Duct must be clean before sealing. Dirt and oil prevent proper adhesion.

Stop if

• Should I clean the joint surface before applying sealant? What cleaning method for this substrate?

Watch out

• Don't apply sealant over dirty or oily surfaces. Don't seal without wiping joints first.

Check

• Is the joint surface clean and dry?
• Is oil or cutting fluid removed?
• Is there loose debris?

Steps

• Is the joint surface clean and dry?
• Is oil or cutting fluid removed?
• Is there loose debris?

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