How to Repair Hole in Flexible Duct

Repairing a hole in flexible ducting is possible, but depending on when the repair is conducted, it may be too late.

Here are two go-to methods for repairing a hole in flexible duct. If possible, make sure your HVAC unit is off before starting this process.

Cutting and reattaching

The first option can only be done if your flexible ducting is slack, this indicates it can stretch. This is crucial as this method involves cutting at either side of the location of the hole, and with the remaining ends, connect them together and secure them. Make sure to use plenty of foil tape to reinforce them, and cable ties to secure them.

Using additional ducting

The second option involves using semi-rigid ducting, or a rigid connector. For this method, cut the ripped ducting in the same fashion so two ends with no holes in the ducting are able to attach. However, this time, you insert the semi-rigid ducting, or rigid connector (which has a diameter large enough to slot between the ducting ends).

Ensuring the semi-rigid ducting has at least 4 inches (10.16 cm) inserted on each side, secure the three pieces together using cable ties or quick release worm drive clips.

Both of these methods can be reinforced with the aid of ducting insulation.

Is it better to repair ducts or replace them?

In our opinion, it is better to replace ducting rather than repairing it. We understand that costs are a relative factor, but in some cases, the damaged ducting may have spread issues such as mould through the ducting system itself.

The best way to avoid cases like this is to repair the ducting immediately, rather than leaving it to repair at a later time. Every second counts. Here are some signs that indicate your ducting may have a hole in it.

• The ducting is making a sound it hasn’t made before
• The HVAC system is working at a less efficient rate.
• There are large bugs or even vermin within the ducting.
• Mould has spread through the ducting/HVAC system.

Can I maintain my ducting?

Yes. Aside from ventilation, scheduling ventilation maintenance checks by a professional is the best way to be preventative rather than reactive. By getting maintenance checks, you are ensuring that any possible issues are dealt with in advance, ensuring a longer life for your ducting system.

Flexible ducting options

I-Sells is a provider of ventilation solutions and everything that comes with it, including ducting. We supply flexible ducting and much more.

Whether it is flexible aluminium or PVC ducting you’re searching for, we have it. Some of our options can also vary in diameter in accordance with your needs. This includes 100 mm and 102 mm in diameter. This also applies to the lengths we have available.

Installing ducting, who can do it?

HVAC technicians offer services which can include installation of a HVAC system and its ducting for most if not all kinds of properties. Please note that the complexity of the job at hand could alter the price if there are no fixed rates for certain services.

Alternatively, you can install your ducting yourself, as long as it ends up being compliant to part F of building regulations, and does not compromise the safety of any person in the property.

Though this second option can be especially difficult if you have no experience, equipment, or guidance. If you are struggling, please feel free to contact us, and we may be able to point you in the right direction.

Purchase flexible ducting today