I got new carpet for my mustang this Christmas, I was looking at one of my parts catalog and they recommend putting down carpet underlayment under the new carpet especially in the older cars. They claim that it makes the carpet fit better. I could see how it would work for sound deadener, and temperature barrier. My question is has anybody done this to their mustang and does it make the carpet fit better?
I didn't put my carpet in, but the guys that did had said the same thing. The guys that did it have been working on classic mustangs for a while.
Even with the underlayment, I still have a little 'bubble' near the gas pedal. They claim that is how they all are. But I have a feeling it one took some extra time it would fit better.
I suspect the underlayment helps because the carpet is molded assuming the pad is under it. Think about the tunnel. If it is curved assuming the underlayment, the arc of the carpet will be bigger than the tunnel itself. (if that makes sense).
The carpet pad helps keep the carpet up off the floor and therefore, it will fit better. Make sure when you put it in that you test fit the carpet, then mark where the bubbles are. You will most likely have to cut a few slits in it to help keep the bubbles out. Also, some good upholstery cement will help over the tranny hump, and up to the rear seat. I have done dozens of them, and they never fit 100%, but with some quality time and materials, it will fit pretty damn good.