| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,034 Posts1,055,540 Members48,425 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2005 Posts: 3 Apprentice | | Apprentice Joined: Apr 2005 Posts: 3 | Any ideas to insulate the enclosed portion at the rear of a cab? I want to super insulate my cab and have done all exposed areas, but the only access to the upper rear of the cab is through the dome light and small holes at the rear of the headliner. Stuff with fiberglass pink, spray foam...?? | | | | | Joined: Nov 2007 Posts: 80 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2007 Posts: 80 | You might try the spray foam, but remember it expands and could put a lot of pressure on the sheet metal causing it to distort.
GM uses a lot of foam for insulation in their roof pillars and rocker panels.I know cause I nearly burned up a Cadillac welding on a quarter panel, the stuff took off like a dry Christmas tree!!
For the exposed areas under the headliner, there a lot of insulating products available.
Check with your auto body supplier, they have foam fillers from 3M and others that don't expand as agressively as the building foam.
| | | | | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | If you spray foam it, I would use a closed cell foam. Moisture in an open cell foam will hold the moisture for a long time. I think I would just stuff some fiber glass in there. At least you could get it out later if need be. | | |
|
|
| |
