Insulation installed before joint inspection

Do not cover joints before they are inspected, sealed, tested, or approved. Insulation can hide problems that become expensive later.

Stop if

• Before I insulate this run, has sealing/testing/inspection been cleared for these joints?

Watch out

• Do not use insulation to hide an unverified joint.

Check

• Check whether sealing, pressure testing, or inspection is complete.
• Look at backside joints, corners, collars, taps, and seams.
• Photograph hard-to-see areas before cover if directed.
• Hold insulation until the foreman says the duct is ready.

Steps

• Check whether sealing, pressure testing, or inspection is complete.
• Look at backside joints, corners, collars, taps, and seams.
• Photograph hard-to-see areas before cover if directed.
• Hold insulation until the foreman says the duct is ready.

More in Insulation, Liner & Vapor Barrier