Monday, May 27, 2019


Inside the trailer.

The wall inside the trailer received two styles of insulation.  Reflectix and fiberglass batt insulation. Reflectix is a brand name sold by Lowes stores and is readily available in various widths and lengths.  It is an aluminum double faced bubble wrap about 1/4 inch thick.  Reflectix is a thin layer of insulation applied to the inner skin to reduce intense heat transfer from the exterior hot metal skin to the interior of the trailer in the summer time.   The other type of insulation is an unfaced fiberglass batt insulation that is 1 1/4 inches thick.   The wiring will also be placed inside the walls between the layers of insulation so space is limited within the walls.


I sourced the reflectix type insulation for a long time and was able to find a good deal on an overstocked job site.  The roll was more than enough for my trailer.
I chose to purchase a big roll 48 inches wide.


Each cavity between the ribs was measured and pieces were cut using a utility knife and straight edge.


3M Super 77 multipurpose spray-on glue was used to anchor the material directly onto the inner skin.


Looking good!


After finishing a plan was needed for the installation of the wiring.  Rebuilding a trailer is much like building a house.  The trailer wiring system requires three different systems.  They include wires for the exterior vehicle lights, the 12 volt system service and the 120 volt service.


Very interesting!
Where do all of these wires go?


It became necessary to design a wiring schematic for the 12 volt and 120 volt systems.  I will include these in a binder with the trailer for future trouble shooting.


Labeling of these wires was a must!


Duct tape helps hold things in order.


Planning well ahead was necessary.
This is one of three 12 volt switches installed.


This picture shows an extra wire loop for a future installation of a kitchen fan.  Locating the wire inside the wall will be much easier.
The black wire is a TV cable installed for future connectivity.
All of those lights, plugs, fans and etc. require wires to operate.


The fiberglass batt insulation roll was purchased from the Airstream factory and is the same as installed in all new Airstream trailers.  It is 48 inches wide and as stated on the package is 2 1/4 inches thick.


The insulation unrolled two batts at a time.
Each batt is over an inch thick and fit in the wall cavity just right along with the reflectix insulation.


The fiberglass insulation used in the Airstream factory is much less "itchy."
It made my job much more enjoyable.


The insulation was meticulously measured and cut to fit each wall cavity in the trailer.
A utility knife and straight edge made short work of the task.  


Knee pads were very helpful on the cement work space.


Once again I turned to the 3M spray adhesive to help hold the insulation in place.


Careful placement filled all the spaces.


The total thickness was just right.


All tucked in and ready for the inner skins!


The process works very well.
The ceiling and end caps are all that are left to do.