Before we installed the insulation we sprayed the interior of the exterior skin with textured truck bed liner. Our logic was is would create a matte/textured surface and would reduce condensation.
after doing tons of research we decided to go with
rockwool insulation. It had a multitude of properties that were better than fiberglass including...
- higher R-value
- fire resistant, unlike fiberglass
- will not deteriorate when it gets wet
it was pretty difficult to find instore at home depot and lowes, but found it a contractor supply place in Anderson, SC.
The bats are 3" thick, and the airstream walls/ribs are 1 inch deep, so we had to "slice" each bat into thirds with a bow saw.
We then cut each bat to fit the sections of the wall between each rib. We cut out areas for junction boxes etc. We then placed
prodex insulation on top of that and sealed with aluminum HVAC tape. We buried/sandwiched the electrical wiring between the rockwool and prodex.
This created a clean flat surface to install the new interior panels.
We also sprayed
spray foam insulation on the underside of the subfloor, and sandwiched prodex onto that to keep it together, not sure how much R-value this is will add, but was only a couple extra bucks to do.
black truck bed liner sprayed onto the underside of the exterior panels
(ignore the squares, this was a failed experiment in vapor barriers)
batting cut into thirds
slicing the batting with bow saws
measuring the right size for the section using the prodex
we cut the rockwool to size with a box cutter
rockwool in place
placing junction boxes and wiring
prodex placed on top of the rockwool
taped up seals with HVAC aluminum tape
trailer, spray foam, prodex
)
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