So this is the rubber insulation I tried
View attachment 23732View attachment 23733
I put in 4 pcs about 3" long , it did help there was one spot just behind the brace that didn't take much pressure to oil can, that stopped, there a couple more spots on the roof that do but I have to press pretty hard, more pressure than say waxing a car?
hard to see but there in there.
View attachment 23734
It
might work, but it's fairly dense stuff, like 69.5 said...
Here is the reason I strongly suggested a new roof skin: anything that needs to be squeezed in between the roof panel and the brace is going to exert pressure on the panel, and push it out of it's "natural" shape. Add in some heat from outdoor summer temperatures and some cold from winter temperatures, and now you will most likely have a distorted roof panel. Throw in the natural vibrations of simply driving the car, and it could get worse.
Even though the foam is fairly soft, it still exerts pressure, and even though the roof is steel, pressure under the above circumstances
will affect it over time.
How much time? It could be as short a time as the first hot day, or it could be two years down the road. But, it will happen.
Large expanses of sheet metal need to float free in the areas where expansion and contraction can do their thing without distorting the steel.
The factory put the stuff (whatever they used) in there to keep the rattling and/drumming to a minimum, nothing else.
I don't know how else to say this, other than to say I've been doing this a long time, and have either made all the same mistakes myself, or seen them done and had to fix them. Trust me, I know what I'm talking about.
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