I found this flush up against in the “ceiling” of my dash behind my instrument panel – 1" thick fiberglass insulation. I also have remnants of jute insulation in the *middle* on the dash ceiling (above the firewall). Finally, I believe I saw similar fiberglass insulation in a 1965 sedan in the dash ceiling above the glove box.
I am now trying to decide how to "restore" all this in my car...
I have searched here on Comet Central and am only able to find a couple of mentions in passing. Also, after much Googling I’m not finding anything meaningful – certainly not any replacement insulation ‘parts’ and the like. (If there is a more complete thread on the site here I apologize for not finding it before this post.)
- 1) What was the original installation of insulation above the firewall? (Am I correct that it was exclusively on the ceiling of the dash and a combination of jute in the middle and fiberglass on the “ends” of the dash ceiling?)
- 2) Why did Ford put insulation there? (I am guessing it was temperature regulation for the windshield – e.g. to help the defroster be more effective? Or perhaps anti-rattle?).
- 3) Are there replacement parts out there I have just failed to find (which is presumably just trimmed fiberglass insulation)?
- 4) If I cut my own insulation what material is considered best practice (stick with fiberglass, use modern closed cell foam board, cotton jute, aluminum backed jute, self adhesive dynaliner, etc.)?
- 5) Anyone have any idea the “weight” the original fiberglass (mine is very heavy considering it is only 1 inch thick)? The best facsimile I can come up with so far is this which I think would work - it's 1" thick but may not be as dense as the original.