Carpet Underlay

I did about a 40% coverage of the floor and doors with the butyle rubber. The link in the first post has some interesting findings.
Then I did 100% coverage with the closed cell foam.
Carpet was a tight fit, as I added close to 12mm of stuff.. But it all went in well..

While it was up I went threw with the sickaflex and filled any little holes in the body..

Thanks Kallen,
Mate much appreciated, interesting info.
Sounds great getting rid of the old underlay once and for all.