Hello all,
I am closing in on the actual ordering of a ordering of a trailer; currently I am in the process of finalizing the size and particular options on a car hauler (cargo trailer) and how much I can afford.
I was hoping to ask a couple of questions on the actual build if possible...
Insulation
1. I know this topic is beat to death, and I have read and researched extensively on it but I have not seen anyone do/suggest this method of insulating:
I plan to use 1/2" or 3/4" foam board in between the metal studs (ribs) compression fitted ( I mean just tightly fitting between the studs) and lightly glued. I plan to fur out the ribs another 2" to 3" horizontally in order to accommodate for additional insulation. For this additional insulation I plan to have "rigid foam spray insulation " installed. I think this somewhat loose base layer of foam board will allow flex of external aluminium skin along with allowing for heat expansion/ contraction. Then I can get the benefits of the rigid spray foam. I will do this on the walls and ceiling. What are opinions on this method please?
2. I plan to opt for an extruded aluminum floor, in which I plan to do the rigid spray foam insulation underneath on the entire trailer between joists.
Am I not seeing a reason this may be a bad plan?
Plumbing
As of now, I plan to not install any waste tanks. No tanks at all really. Relying on full hookups.
I'd like to have my standard toilet p trap plummed through the bottom of the trailer into a standard RV style outlet pipe and then a RV hose to the campground waste pipe. I can have a additional (secondary) spiket in the shower (mounted at waist or knee height) with a hose, in which I can introduce additional water into the toilet bowl to " flush down" the Iine after a standard tank flush. Is this a poor idea?
Electrical
I plan to only have 110volt service in the trailer. No 12v DC. I will rely on campground power or on a generator I carry with me. Is there any real necessity for 12v DC wiring in my trailer?
Thanks in advance for any advice.