Insulation can help profoundly.
I have lots of left over sleeping bag closed cell foam ground pads; and have been planning on using them glued inside the Festiva, on all the inner sheet metal surfaces I can get to.
I like removing the inner panels to expose the sheet metal; mainly since there are so many extra places to store things then. That does remove a dead air space, a person reasons makes the car colder inside, or hotter depending.
I used the same material on a '66 VW "square-back" sedan to replace a deteriorated headliner; which was far superior in terms of insulation from heat or cold; as well as liberating so much space I used to keep my Raleigh Colt three-speed bike hung from the inside of the roof.
Another time I glued that same sort of sleeping bag ground pad closed cell foam, all over the interior sheet metal of a '75 Chevy panel van I lived out of awhile. That was an exceptionally successful adaptation; since sleeping inside with bare sheet metal could be worse than being outside the condensation was so severe, like being in rain.
That foam is made so a person can sleep directly on top of snow or ice quite comfortably, so you can imagine the stuff works great glued to sheet metal inside a vehicle; and looks pretty sharp too. The sound insulation value seems limited, unfortunately.
I have lots of left over sleeping bag closed cell foam ground pads; and have been planning on using them glued inside the Festiva, on all the inner sheet metal surfaces I can get to.
I like removing the inner panels to expose the sheet metal; mainly since there are so many extra places to store things then. That does remove a dead air space, a person reasons makes the car colder inside, or hotter depending.
I used the same material on a '66 VW "square-back" sedan to replace a deteriorated headliner; which was far superior in terms of insulation from heat or cold; as well as liberating so much space I used to keep my Raleigh Colt three-speed bike hung from the inside of the roof.
Another time I glued that same sort of sleeping bag ground pad closed cell foam, all over the interior sheet metal of a '75 Chevy panel van I lived out of awhile. That was an exceptionally successful adaptation; since sleeping inside with bare sheet metal could be worse than being outside the condensation was so severe, like being in rain.
That foam is made so a person can sleep directly on top of snow or ice quite comfortably, so you can imagine the stuff works great glued to sheet metal inside a vehicle; and looks pretty sharp too. The sound insulation value seems limited, unfortunately.
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