@
JZiggy
good thinking!
Bang for the buck and asphalt based product fumes, how it turned out.
Having heard of fumes gave it shot anyway. Fumes gassed off first 6-8 months or so open windows & AC fixed it,
end of year interior temps hitting 120-30 windows up don't know it's there.
It's a 4Runner, for resto restomod etc, Nope.
Insulating worth the effort only downside, a real PITA to fix.
You'll be hearing the hard plastic on hard plastic plastic on metal squeaks n chit.