Gold5one wrote:All the work I did building two layer foam insulated walls was a waste of time and money. Only the roof needs insulation. Ask yourself- Do fair weather campers need an insulated tent?
* I tend to agree with you; camping from March-September in N. Texas, I've seen temperatures from 38-108 degrees, where a 200 watt heater or a 5000 btu A/C made sleeping quite comfortable. I use an 11" fan to circulate the conditioned air all-around, so with two small vents on the sidewalls, there is no condensation inside. I nearly retro-fitted insulation, but decided I didn't really need it.
* As for roof insulation, I used aluminized silo paint on top, front sloped roof, and rear hatch to reflect the sun's heat, but I never have camped without using a canopy totally covering the top, so it really wasn't necessary. The canopy gets the brunt of the sunlight, and the airgap in-between eliminates most of the heat build-up. A side tent on one side (or sidewall flap), and the overhang of the canopy on the other side, serve to keep the trailer mostly shaded, and cooler. If the trailer is subjected to the "usual" Texas T-storm at night, and it becomes damp or chilly inside, then a second 200 watt heater can be added. Both ends of the weather spectrum are covered (at least here).
* Having camped for several years in tents (mainly in the Boy Scouts, in the early 60's), I found the Army-surplus tents we used were hot in spring/summer, cold in fall/winter, and mostly damp and miserable in the "usual" (it has rained every time I've camped, I think) T-storm. After a few years, those tents had a particularly-musty-moldy smell I still recall today, so I surely prefer my 4x8 trailer; having most of the comforts of sleeping at home, instead of just sleeping on bare/rocky/wet ground make even the most basic teardrop/squaredrop better than a tent.