You know what they say, the last 10% is the hardest part of the job. My best guess is that the insulation will not keep you warm in Alaska. Maybe I can just build a 4" foam box of R-20 around the bed? The shower looks pretty big, like it will take up 1/2 of the trailer. The front shower wall is also a little curved, by about 1/2" , that will add some fun to the project.
The ceiling has 1.5" of foam board & the ribs were filled with foam also
it makes the ribs a lot cooler by about 20 deg maybe ?
Shower pan is 48" wide x 34" deep, the unit will be approx. 78" high.
I need to check the underside as there is a steel floor
beam close to where the shower drain will go !!
Looks like it will clear by about .0001"