Question about insulation
I am building a camper housing unit (early planning stage). I am bit of a newbie.
What kind of a insulation do I need? Or what kind of insulation have you used in similar conditions?
My first guess would be 50mm (2 inch) thick:
http://www.isover.fi/tuotteet/rakenn...3/isover-kl-37 finnish page - info pdf link in english.
heat conductivity: 0,037 W/mK
My planned housing unit would have perhaps 20 M3 of heated space (rough guess). Sleeping space is on top so that helps. There will be some heat leakage from tiny gaps as there will be non-fixed joints.
Cold is my enemy. I would say -10 to -15 C would be common in winter times. -22 would be rare. -30 C would be once in seven years and -35 would be ones in twentyfive years.
Survival is not the issue. I will have sleeping bag and clothing to keep me going with just a tent. I would like to have reasonably comfortable temperature in my housing unit say 11 to 14 C (? what would be realistic with reasonable heating in -15 C?).
Windows and such will be the biggest cold spots. I plan to build option to replace such things with equipment designed for winter conditions (insulation top priority)
Weight is an issue so I aim for moderate price and light weight.
How would you grade my first proposal to isolation? (acceptable; good; bad - consider XX instead)
What have you used when you have build?
Am I overkilling with insulation?
Are my expectations unrealistic?
What solutions people use for windows in cold conditions? (should I look for something specific?)
With kind regards and hoping to hear from you,
PS I am in so early stages that I am reluctant to post my drafts yet since there are so many things that I will redraw as I ponder the basic questions. Perhaps once I am reasonably confident in my design.
I would specially like to hear experiences on no water toilet like http://www.natureshead.net/
http://motorhome.webasto.co.uk/cooki...oker-x100.html (with intention to make do without gas in my camper. this would require aggregate or fuel-cell to generate electricity for fridge etc. - any experience on such ? )
PPS thank you Iain for your thread about your project!