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Old 09-15-2020, 09:41 PM   #1
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HVAC ... duct work, vent cracks sealing method


For sealing cracks between vents in HVAC i always see a bright silver color tape that's used by professionals.

I bought this at HD today.... since it was in HVAC section and only $4... lol.

Can this be used to seal cracks to prevent a.c.... or heat to leak from return vents.... usually where one joins with another or near screwed in sections...

I feel the a.c. leaks where we attached a humidifier for use in winter. .. this in return duct section.

Please advice, should i return this and get a better one?

Thx

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Old 09-16-2020, 01:35 AM   #2
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Re: HVAC ... duct work, vent cracks sealing method


Fabric duct tape consistently fails when used on air ducts. You'll be re-doing it - it will fail anywhere from few months to couple of years after application.

Use the foil tape instead. It can last decades.
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Old 09-16-2020, 05:34 AM   #3
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Re: HVAC ... duct work, vent cracks sealing method


+1. This is NOT one of the 1,000,000 applicable uses of ductape.
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Old 09-16-2020, 05:37 AM   #4
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Re: HVAC ... duct work, vent cracks sealing method


Cloth duct tape is good for many uses. Just not on actual duct though.


Return it.


You want foil faced, UL181 listed tape.
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