Little help-AC duct's insulation splitting

[CWfrmTx]

I have a 2008 itasca suncruiser 35A that the AC duct work, behind the end cap, has the adhesive and tape coming loose from being wrapped around duct work. The attached pictures were taken from beneath the rig looking up behind the endcap.

We have not really felt a difference in the AC and heat but it is not yet the mid summer heat that we encounter in our travels.

I have a quote of $5500 to remove the cap and retape the duct work. I am concerned not only with the expense for a 13 yr old MH, but also that I have full paint that may be effected if the back cap is taken off.

I have consulted Winnebago and they had no ideas but to pull the cap, repair, and make corrections to the paint as needed.

I am looking at alternatives. I am looking at using closed cell spray foam insulation to encase the duct work like what is being done on some residential and commercial duct work. I do have a spray foam insulation gun with an extended nozzle of 36 inches so I can reach most, if not all, of the duct work.

Has anyone had this issue? Thoughts on using the spray foam versus taking the cap off and retaping?

Appreciate any help or ideas

Thanks

[tderonne]

Gets talked about often.

Here's a thread with a lot more info:

Air conditioner duct inside rear cap leaking

[creativepart]

I had my rear cap knocked loose in an accident when a pole in the storage yard leaped out and hit the rear of the coach.

When this happened the top of the cap stayed connected and only the mounts near the bottom half were completely knocked loose. I could lift the bottom out away from the lower part of the coach.

There's not a lot holding on the rear cap... but you'd have to remove the vinyl trim on the sides to reveal the screws holding the sides on. AND, that vinyl trim is painted to the body color. So, if you remove the cap you'd at least have to have the vinyl trim repainted. I don't think you could remove that trim without cracking the paint on it since it's flexible... and the paint isn't.

My entire repair was $28,000 but I damaged more painted surfaces than just trim. So, $5000 doesn't sound bad, well, it does, but not in comparison. But I'm sure you'd have another $2,000 or more in paint charges.

Here's my rear cap coming off:

[CWfrmTx]

Thanks for information. I ended up using the adhesive and then re-taped with extra thick 3m tape that my HVAC repairman recommended and is used to seal residential HVAC ducts.

It took a few trips up and down a ladder to access the top of the duct. I used an extension pole with a cutdown paint pad base to reach other areas of the duct while laying under the rig.

After repair, I checked for any air leaks both by hand and laser thermometer. No leaks were detected

Hopefully I get another 13 yrs before I need to address again

Thanks again for pointing me in the right direction for help

[tim myers]

Originally Posted by creativepart

I had my rear cap knocked loose in an accident when a pole in the storage yard leaped out and hit the rear of the coach.

When this happened the top of the cap stayed connected and only the mounts near the bottom half were completely knocked loose. I could lift the bottom out away from the lower part of the coach.

There's not a lot holding on the rear cap... but you'd have to remove the vinyl trim on the sides to reveal the screws holding the sides on. AND, that vinyl trim is painted to the body color. So, if you remove the cap you'd at least have to have the vinyl trim repainted. I don't think you could remove that trim without cracking the paint on it since it's flexible... and the paint isn't.

My entire repair was $28,000 but I damaged more painted surfaces than just trim. So, $5000 doesn't sound bad, well, it does, but not in comparison. But I'm sure you'd have another $2,000 or more in paint charges.

Here's my rear cap coming off:

Looks like you were trying to convert your Winnie into a Toy Hauler