Repair to HVAC flex duct covering - need advice

rrr1234December 13, 2011

The gray plastic covering on my home's HVAC flex ducting is beginning to crack. I don't think there is too much air loss, but I'd like to fix it before it gets worse. Rather than replace all the ducting (expensive), is there a way to 're-wrap' the ducting? For example, I was thinking that Tyvek could be used. Are there any other wrapping materials out there that can help keep the cost down without replacing all the ducting?


Thank you for reporting this comment. Undo

if they have split..I've never tried to repair them,
not much cost to replace.
to repair the duct would have to be clean and dry
and then use a mastic tape, but it won't stick if
surfaces are not clean and dry.
usually gray duct splits due to uv rays. wrapping them with another vapor barrier can cause condensation problems.

best of luck

    Bookmark   December 13, 2011 at 5:57PM
Thank you for reporting this comment. Undo

Is it a grey covering or a silver one? when the grey starts falling apart there isn't much help for it. Here in georgia the extreme temps of most attics breaks down the outer and inner plastic on that kind of flex. Flex duct is something that most handy homeowners can replace themselves in most cases......... just a thought.

    Bookmark   December 14, 2011 at 8:47AM
Thank you for reporting this comment. Undo

save your money for new duct work other than that don't mess with it.

    Bookmark   December 14, 2011 at 8:55AM
Sign Up to comment
More Discussions
Carrier Greenspeed 25VNA Massachusetts Cold Weather Data
Hello Everyone, I wish I had had this information prior...
2 furnaces- 2 different setups
I had a lennox EL195 furnace put in last year. They...
Enery efficiency of exposed ductwork?
What are your thoughts on the energy efficiency of...
Insulating floor on my raised home in Louisiana.
We recently installed solar panels on our home. We...
New Furnace - Keep Previous Excellent Thermostat?
I am replacing a 20-year-old single-stage Carrier gas...
© 2015 Houzz Inc. Houzz® The new way to design your home™