I heavily insulated between the roof spars the full 1 1/2 void. I layed the same blue foam insulation
on the aluminum sub floor and then the same zip panel for the finished floor.
Then came the head scratcher how to insulate the sidewalls.
I finally cut a 4 x 8 sheet of 3/4 blue foam to fit the inside wall profile and wrapped the thing with
a soft material.
We Hoosiers are a crazy lot and double dog dare each other to join our shivaree, where we go
camping in the second week of January ( Generally our coldest weather ) Coldest recorded so far was -1
with a -15 wind chill so insulation is important to me.
There has been mentioned the sound deadening and the air conditioning benefits as well
and I heartily agree to all.
Here is a link to the 4x7 build thread near the side wall insulation it's yet another option.
http://www.tnttt.com/viewtopic.php?f=50&t=38489&start=75
