Insulation Questions

[chp1982]

I have removed the entire interior from my car for cleaning and I have a bunch of questions:
-The jute backing is shot on the carpet. Anyone know of where to get a suitable replacement? Can Dynamat act as a replacement? Do you guys recommend putting dynamat in regarless of the jute backing?

-My headliner insulation is decent but if a better replacement is out there, or if dynamat can be used there as well, let me know.

-Lastly, when the rear seat back was removed, there was insulation dividing the cabin from the trunk and this too, was mildewed. Anyone found a suitable replacement for this insulation?

Thanks-