I did this to my doors a few months ago. I'm really happy with the results. It seems to reduce a lot of the higher pitched noise, and the doors feel and sound more substantial when they close. I used the NVX 90 mil pack with 36 sq feet. I probably have 5ish sq feet left that I may add to the rear hatch.
I have heard that NVX mats may slip in very hot environments, so there may be other products better for folks in the southwest.
I have heard that NVX mats may slip in very hot environments, so there may be other products better for folks in the southwest.