Author Topic: filling roof cavity with automotive foam  (Read 3929 times)

Offline pholliday1

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filling roof cavity with automotive foam
« on: November 22, 2011, 12:19:56 PM »
crewcab roof had exterior damage( belonged to roofing contractor looks like they specialized in 3 story roof jobs) pushed out most dents filled the creases with plastic. The question is has anyone heard/had experience with using automotive urethane/foam to inject in cavity to give support to roof? some reseach turned up some products from 3m but have had no experience with that. If I so much as breathe on roof it wants to buckle back down.
VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift

Offline Captkaos

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Re: filling roof cavity with automotive foam
« Reply #1 on: December 12, 2011, 09:01:26 PM »
I wouldn't do it.  It could potentially trap moisture and cause it to rust.

Offline pholliday1

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  • 1990 V3500 Crew Cab
Re: filling roof cavity with automotive foam
« Reply #2 on: January 14, 2012, 03:55:55 PM »
Just picked the most recent copy of 4wheel and off road and there doing an article on converting a new jeep (brand new) and with a kit, turning it into a pick up. In the process they are disassembling and seperating the brand new sheet metal and in the photos and captions they show where jeep has used a large amount of this automotive foam between the panels to fill some of the voids.... very interesting will do more research and see if i can get some answers. 
VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift