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Old 08-21-2019, 09:32 AM   #1
454cid
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Default What is the diaper thing in the rear doors?

Now that I have working front windows, apparently I have enough wind to blow the diaper thing around in the passenger rear door. It's coming apart, and what's still in the door is soaked with water. I didn't realize it was being damaged until I happened to look behind me. It doen't really look like fiberglass to me, but it does look like a fiber, but also disintegrates.

If I have enough time today, I'll tape over where the door plastic/liner/pad is supposed to be. I removed it to get to the window switch.

...
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Old 08-21-2019, 10:38 AM   #2
focusofheart
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Default Re: What is the diaper thing in the rear doors?

Hopefully I have understood you...

Because the plastic barrier under my outer door panels and inner door panels are failing I did a search on this forum and found this - maybe doing something like this would help your problem?

http://www.saturnfans.com/forums/sho...d.php?t=141110

You might not need this exact type of material - it is just an idea to get you thinking.

...
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Old 08-21-2019, 01:04 PM   #3
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Default Re: What is the diaper thing in the rear doors?

Duct tape will not last long inside of a door due to the high heat, use the high temperature rated aluminum duct tape. 350F or above recommended. Make a new inner door sheet and place sound deadening material inside of outer skin.

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Old 08-21-2019, 01:47 PM   #4
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Default Re: What is the diaper thing in the rear doors?

I speak big block but couldn't follow this without the context clues of others.

...
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Old 08-21-2019, 08:41 PM   #5
focusofheart
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by Waiex191 View Post
I speak big block but couldn't follow this without the context clues of others.
Although I can use ASL, I have no idea what "big block" is - educate me.

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Old 08-21-2019, 09:15 PM   #6
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Default Re: What is the diaper thing in the rear doors?

Chevrolet 396, 427, and 454. I had a 396 in my '65 Chevelle. 454cid is clearly a big block kid.

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Old 08-21-2019, 10:00 PM   #7
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Default Re: What is the diaper thing in the rear doors?

[QUOTE=focusofheart;2305246]Hopefully I have understood you...

Because the plastic barrier under my outer door panels and inner door panels are failing I did a search on this forum and found this - maybe doing something like this would help your problem?

Great idea ! No doubt you will have to explain what it is. I know...I use one everyday !

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Old 08-22-2019, 02:51 AM   #8
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by focusofheart View Post
Hopefully I have understood you...

Because the plastic barrier under my outer door panels and inner door panels are failing I did a search on this forum and found this - maybe doing something like this would help your problem?

http://www.saturnfans.com/forums/sho...d.php?t=141110

You might not need this exact type of material - it is just an idea to get you thinking.
I do need to replace the plastic barrier, but that's not what I'm asking about now. I planned on using plastic from a construction grade bag, but that reflective bubble insulation may be a good option too. I didn't realize the plastic sheeting went under the outer skin.

The stuff I'm looking at now is inside the bottom of the door. I don't know if that's exactly where it's supposed to be, as it's obviously degraded. It looks like diaper material, but I don't know exactly what it is. It's very fibrous but the fibers will disintegrate. The wind must have blown it around as a bunch of it is on my seat now. I hope it's not horrible to breathe.

...
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1999 Chevy K3500

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Old 08-22-2019, 02:54 AM   #9
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by OldNuc View Post
Duct tape will not last long inside of a door due to the high heat, use the high temperature rated aluminum duct tape. 350F or above recommended. Make a new inner door sheet and place sound deadening material inside of outer skin.
I'm not worried about longevity of the tape, as it's only meant to be temporary until I can clean up and reassemble the door.

...
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Old 08-22-2019, 03:00 AM   #10
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by Waiex191 View Post
I speak big block but couldn't follow this without the context clues of others.
Hmm, well that was after working 3rd shift on too little sleep. The rear door has what looks like it was a diaper in the bottom of it. It's a white fibrous pad that's coming apart with the wind and being blown around the back seat area. What's still in the the door is soaked. I have the inner door panel off so I could get to the window switch.

My big question is what's it made of... I've never seen a material exactly like this. I'm also not sure of it's function.

...
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1999 Chevy K3500

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Old 08-22-2019, 10:11 AM   #11
focusofheart
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Default Re: What is the diaper thing in the rear doors?

http://www.saturnfans.com/forums/sho...d.php?t=193730

When I removed my outer door panels there was plastic sheeting and something underneath it that looked like a white insulation material which was definitely falling apart.

that could be the stuff you are talking about -

I used Gorilla tape to secure the plastic sheeting (and hold in some of the insulation) until I could get back to it and to help prevent possible water from causing more problems (I live in a dry state so that is normally not a concern).

Since I had to take off the window channels to remove the outer door panels I glued 1/2" felt to the my window channels to help divert water also.

As a seamstress, my educated guess is if you have no white "junk" behind the outer door plastic sheeting then the insulation has already fallen apart and settled into the bottom and gotten wet. As far as I could see it was not fiberglass or it would have caused itching.

...
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Old 08-22-2019, 01:14 PM   #12
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Default Re: What is the diaper thing in the rear doors?

Probably some form of polly fill insulation.

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Old 08-22-2019, 03:22 PM   #13
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by OldNuc View Post
Probably some form of polly fill insulation.
Poly doesn't disintegrate like this does. It's weird.

...
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1999 Chevy K3500

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Old 08-22-2019, 05:55 PM   #14
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Default Re: What is the diaper thing in the rear doors?

Whatever it is it will have a part number and description. Maybe someone will look it up for you and it will be a gen-3 feature.

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Old 08-22-2019, 08:11 PM   #15
focusofheart
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by OldNuc View Post
Duct tape will not last long inside of a door due to the high heat, use the high temperature rated aluminum duct tape. 350F or above recommended. Make a new inner door sheet and place sound deadening material inside of outer skin.
Because I was looking into replacing the failing plastic liners under the outer panels I followed your advice today. I began to replace them using 16" Reflectix insulation and their aluminum tape. It worked out well and was easy to cut to fit. I created the door insulation using 2 horizontal pieces so I could open the center of it to lubricate the regulator.

Thanks 454cid and OldNuc - I may have waited if this thread had not been started.

...
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Old 08-22-2019, 10:48 PM   #16
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Default Re: What is the diaper thing in the rear doors?

You will be glad you did that as it cuts down on noise and cold drafts.

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Old 08-23-2019, 08:29 AM   #17
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by focusofheart View Post
Because I was looking into replacing the failing plastic liners under the outer panels I followed your advice today. I began to replace them using 16" Reflectix insulation and their aluminum tape. It worked out well and was easy to cut to fit. I created the door insulation using 2 horizontal pieces so I could open the center of it to lubricate the regulator.

Thanks 454cid and OldNuc - I may have waited if this thread had not been started.
Did you get any pictures? I likely won't go as far as you have since I'm working so many hours. I don't really want to pull an exterior panel off right now.

...
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1999 Chevy K3500

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Old 08-23-2019, 09:14 AM   #18
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Default Re: What is the diaper thing in the rear doors?

Based on parts diagrams it's just a sound absorber that earlier gens didn't get. Being a parts diagram it's unclear how it's attached to the car, I assume the same silicone that the plastic dust/wind blocker is attached with.

This thread has a few pictures on upgrading it: http://www.saturnfans.com/forums/sho...d.php?t=141110

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Old 08-23-2019, 10:35 AM   #19
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Default Re: What is the diaper thing in the rear doors?

Quote:
Originally Posted by 454cid View Post
Did you get any pictures? I likely won't go as far as you have since I'm working so many hours. I don't really want to pull an exterior panel off right now.
Sorry - I have no images, although it looks similar to this one on the forum that I originally posted. I think I will need to get a smart phone just to take good images

http://www.saturnfans.com/forums/sho...d.php?t=141110

I did use aluminum tape and started by cutting a piece of insulation to span the top of the door following the level the prior insulation had been.

Then I added a second strip to cover the lower section.

It does not have to be perfect as the insulation is easily cut with kitchen scissors.

Using the door itself as a pattern, I marked out the shape with a permanent marker and basically cut the insulation to fit the door. There was some additional trimming, following the marks where the old insulation had been, so that the holes were exposed for the T-30 screws.

In all the insulation took a matter of about 30 minutes. My husband approved of the job.

The toughest part was removing the outer panel and repairing the 3 broken tabs for the T-30's. I may have second thoughts regarding the passenger front door panel now as that one has never been removed prior either.

I used RipStop Nylon rather than leather (as the backing under the tab) and a couple layers of Gorilla Super Glue to put the puzzle together again. It just took some patience and time to repair. This little trick had already worked on a few other broken door tabs and a hair line fender crack in the polyamar (plastic). I just removed the little silver thingies that the T-30's go through prior to gluing the tabs together. I was surprised all the pieces were available and I did not have to use plastic washers to bridge any space.

I realize that getting a new door panel is the normal route
, yet I tend to repair, if able, with what I have around the house.

The door I finished yesterday is solid and makes far less noise.

Total time was about 2 hours due to the broken tabs. I imagine there is an easier way to get the T-30's off which I will look into for myself.

If you try this route, practice repairing some similar broken plastic first using the glue, so you are comfortable with its strength.

Hope the lengthy verbal explanation helps.

...
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