Bear's 65

[speedmerchantcustoms]

Great idea for the roof. Do you mind going thru the process you used? How did you keep from using to much foam
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[shrekbear]

Originally Posted by speedmerchantcustoms

Great idea for the roof. Do you mind going thru the process you used? How did you keep from using to much foam
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The roof had identical dents/low spots on the left and right sides-like there was an overhead rack for tires, etc. The left side reacted well to our homemade stud gun, but the right refused to cooperate. Sounds like a typical issue with these trucks. The right side was far more "oil canny" for some reason. I could press a large portion down with two fingers resulting in a rather large, but shallow crater/saucer.

Whatever I did, I knew I would need to clean up the mess from the studs, so I drilled a hole just big enough for the straw, fed the straw in to different areas and let the foam work. Like I said before, I couldn't think of a reason not to do it. The void between the interior and exterior roof is shallow, but expansive. I wasn't worried about too much foam. The foam will follow the path of least resistance. I dont know if it matters, but I released the foam in incrimates. I would dump some in then wait a few minutes and repeat. I used 1/2 to 3/4 of the can over 30+ minutes. In my mind, i wanted it to set up a little each time. I do not know if it matters. Thats what i did.

I probably used more than necessary, but I wasn't afraid of it seeping out. Besides, it's hard to save a can of foam for another day. Maybe it will help insulate? Stop rust? Slowly poison me?
It helps having a plumber in the family. Those guys always have expanding foam in their vans. What he doesn't know won't hurt him.

I let it sit til the next day. Worked well.
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