How To Repair Flexible Ductwork

Fold the existing duct s outer liner over the insulation and slide it between the insulation.

How to repair flexible ductwork. Also make sure to use hvac tape and seal all of the joints between duct segments. Instead just score the tape at the seam with a utility knife and remove the screws right through the tape. Don t use standard duct tape since the adhesive will come loose over time. Turn off the fan and apply special metallic foil tape over the hole or gap.

There are a few different ways that you can repair the flexible duct depending on what went. Cut a piece of foil tape large enough to cover the damage to the internal duct. Watch this quick how to video to l. Step 2 repair ducts.

Tampering with ductwork can lead to more problems you need the experts to take care of this job to keep the repairs from spiraling out of control. No air should be able to penetrate the ductwork and the joints are a natural weak point. Now that you. How to repair a leaking flexible duct step 1 find the leaks.

When it comes time to retape just clean off the dust and apply new tape right over the old. Use enough tape to extend about 3 4 inch onto the metal or plastic pipe and bridging. The insulation you use to wrap your ducts should leave no gaps and be at least two inches thick to work effectively at reducing or eliminating condensation on ductwork. The first thing that you need to do is find the actual leaks in the duct work.

Cover the damage with the tape. Step 3 check. Turn on the hvac fan and touch the ductwork. If you have to disassemble existing ductwork fittings there s no need to peel off the old foil tape first.

If disassembling a flex connection peel away the old duct seal and cut the duct strap. Replacing flex duct remove the damaged flex. Feel it up and down and check for drafts that indicate escaping air.