I'm redoing the interior panels on my 75 H/O. For re-assembly, I see there is the watershield membrane but is there also an insulation blanket that goes on after that, before the panels are installed?
Bob

 

Bob, did you get a resolution to your question? I have a 72 Cutlass and I have the original 72 Fisher Body Service Manual for the car. The manual covers all GM brands, and all models (except "H" body 'compacts'), so it covers 72 Cutlass Supreme.

I see no mention of any insulation between the watershield and the door panel, but that's 1972.

Did you check on GM Parts Wiki?

Regards,
Barry

 

Yes I did and it would seem there is not any sort of insulation in the door, just the paper watershed membrane (I used plastic) but I did get a reply. Thanks much.
Bob