I’m hoping to find a sound and temp insolation product to replace the fiberglass starting with the slider door. 

I would want light weight as I’ve already increased the weight with the fat Matt.  

I need to go in there to tighten the slider handle and to add some fluid film to som areas of concern. 

I don’t love the fiberglass but have not found anything folks feel is a improvement.

Eric Caron 
85 GL  auto