When I had my Eldorado Brougham I wrapped the front exhaust pipes with fibre glass tape to help reduce the heat transfer through the front floor. It definitely made a difference, and as a bonus it reduced the exhaust intrusion from the front.
I bought some more tape with one of the exhaust part orders with a plan to do the same thing. I decided it was about time that I installed it on the front pipes to get the same benefit. It is a bit of a juggle doing this lying under the car, but some patience and persistence got things moving along. The first time I did this I wet the fibre glass tape before wrapping it – I should have done this again as it was not as flexible when dry.
Once I had the tape tightly wrapped and retained with some steel zip ties I sprayed it with some exhaust paint. This is not to make it look good but rather to lock the fibres in place so it holds its shape and resists fraying. A couple of the steel zip ties didn’t hold as tightly as I would like so I might end up replacing them with a hose clamp…..I will drive it a couple of times and see how it goes.