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underlay / sound insulation options questions
#1
Tried a search thinking this had already been discussed but no luck.
Background:
What was supposed to be a freshen up paint job has turned to a more major project. My body and paint guy wanted the rear interior removed in order to cover paint right inside the door jamb. I peeled up the factory carpet underlay sound deadner and found a weak spot in a weird area. A mouse (or something bigger) built a nest under the driver's side rear seat and apparently either lived there a long time or drank heavily leaving behind a lot liquid corrosion because compared to the rest of the floor it is weak. Its only a small area and the rest of the floor just has surface rust but its time to sandblast, repair and repaint the floors.
Question: The factory underlay broke apart and a lot can't be reused. It seemed to hold moisture against the floor creating surface rust anyway. What have you guys used to replace the sound deadner insulation and are there any options that will avoid moisture probs but look sort of original?

I searched Don's website and it looks like there is an OEM style kit but out of stock for a 71-73 convertible. Has anyone used this style of replacement and if so how did it work? Does it seem to hold moisture?
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#2
I went with the original style underlayment. My floor was solid because back in 1974 I removed the interior and rustproofed the floor. When I removed the carpet again in 2007 I only found a couple of minor surface rust spots. Here are a couple of pics:

[Image: 2005_0430055.jpg]

[Image: 2005_0430053.jpg]

[Image: 2005_0430062.jpg]

[Image: 2005_0430061.jpg]
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#3
Wow, good call with the rust proofing Mike! That's awesome.

Steve



[Image: 25yvyp3.jpg]
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#4
sm3570;28846 Wrote:Wow, good call with the rust proofing Mike! That's awesome.

Thanks! Way back in 1974 I planned on keeping the car for a long time, after all, the 73 Convertible was supposed to be the very last Mustang convertible!!! But they made a comeback in 1983! I also had the Ziebart rustproofing done. It paid off, never any rust through in the whole car!
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#5
sm3570;28846 Wrote:Wow, good call with the rust proofing Mike! That's awesome.

I was thinking the same thing! Just think if the factory had done us all this favor from the get go, and the cowl area!
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#6
We used your basic "tar paper" underlayment as seen in the pictures (nice pics) and stuck it down with 3M 8090. All you can hear is the subtle hum of the Glasspacks. Who needs a radio, the car sings.

mike

[Image: 1_11_11_13_11_50_27.png]
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#7
As I did not want moisture to gather anywhere inside the car, I simply laid the carpet on the bare metal, without any insulation at all. That way, if it gets wet inside, all it takes is a warm day with the top down and the car is dry.
Sometimes I wonder if maybe I should have used sound deadener, though.....

[Image: 1z21rv4.png]

Mike

"If I were you...... I´d rather be me."  Tongue

Check out my video:
http://www.7173mustangs.com/thread-my-mustang-in-action

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#8
I agree with everyone about Mike's idea to rustproof when the car was basically new: good idea. I wish someone had done that to mine, or at least taken the mouse and nest out from under the back seatDodgy. I can't complain as the floors aren't bad but not nearly as nice and clean as Mike's.
Thanks for the pics Mike. It helps me sort out what is normal on the floors. I wasn't sure on the big tar patches on the rear passenger floor around the drain plugs. The pics are a good reference.
Mike and goodnigh, where did you get the tarpaper underlayment kits?
Thanks,
Dan
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#9
72 mach1;28868 Wrote:Mike and goodnigh, where did you get the tarpaper underlayment kits?
Thanks,
Dan

Can't remember but probably someone like NPD.

mike

[Image: 1_11_11_13_11_50_27.png]
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#10
72 mach1;28868 Wrote:I agree with everyone about Mike's idea to rustproof when the car was basically new: good idea. I wish someone had done that to mine, or at least taken the mouse and nest out from under the back seatDodgy. I can't complain as the floors aren't bad but not nearly as nice and clean as Mike's.
Thanks for the pics Mike. It helps me sort out what is normal on the floors. I wasn't sure on the big tar patches on the rear passenger floor around the drain plugs. The pics are a good reference.
Mike and goodnigh, where did you get the tarpaper underlayment kits?
Thanks,
Dan

Dan, we [ should ] have them in stock.
If not I can direct ship it.
Don


Ohio Mustang Supply
440-949-2556

[Image: oms_sig_banner.jpg]
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