Angled roof and wall material in a prefab/panel studio

I will be building a new home and CR using prefab panels and have a few questions (1) Wood panels are way cheaper than concrete. I know that the latter is preferred due to its mass, but would a sandwiched wood panel be sufficient? (Two 2cm panels with 6-8cm of styrofoam in the middle) If not then would pure rockwool panels suffice? http://www.rockwool-sandwichpanel.com/s ... definition (2) Since I am not limited design-wise and plan to use a 9° angle on my ceiling, should my outer walls be built with the angle as well? Or is it somehow desirable to build a rectangle and have all that dead space outside the inner leaf? This question applies to the walls as well, which I could also have splayed to any specs I choose. (3) There is a very good chance the structure will be mounted on various columns of cinder blocks, meaning that the floor of the studio wont have solid ground beneath it. I recognize that this presents further challenges and am curious how I should address them I also have quite a few design questions but don't want to clutter up this thread too much. I've found that focused queries are what really benefit people searching these forums.

it depends on your isolation requirements. using wood framed construction can work quite well.

That's good to know Glenn, cheers! As for the roof, I'm thinking of just doing a rectangular structure for speed's sake (construction-wise) and handling the shaping/isolation with the internal layer. Still investigating options with the floor. It looks like I will have permission to use a solid concrete block as a foundation (just cant break ground as it's prohibited on this particular plot of land)

potentially you could use concrete with the proper support for the floor even if its on a raised set of pillars...

aceofdubs wrote:

That's good to know Glenn, cheers! As for the roof, I'm thinking of just doing a rectangular structure for speed's sake (construction-wise) and handling the shaping/isolation with the internal layer. Still investigating options with the floor. It looks like I will have permission to use a solid concrete block as a foundation (just cant break ground as it's prohibited on this particular plot of land)

Actually the reference to wood framed construction has nothing to do with the panels you are interested in. The panels will most likely not give you any more isolation than a typical plywood sheathed/shingled roof...especially since there is a thermal break of Styrofoam which has no isolation properties what so ever. It makes no difference if it is framed with sheathing or framed with these panels, the decoupled interior environment is what will get you the isolation....not the panels specifically. But the exterior and the interior parts of the build have to be considered individually...as a collective...not individually as the one will help the other, since this is often just not true.

something like this: concrete floor on the supports with room within a room. open space above roof for ducting etc.

Right, but that has nothing to do with the panels suggested that seems like you either agreed with or missed. Me personally, back tracking is a sign of a weakness in a specific area. So if it was an omission or not, then I must think that there should be better attention to detail. The Panels suggested by the OP are a typical roof sheathing, nevermind the insulation factor. The structure you provide in your picture, Glenn, is inaccurate in respect to the OP's request, and is, in my opinion, a continuation of your weakness in this area.

I agree this isn't what the original poster was asking on the panels but rather the overall approach to take with a room within a room rather than using weaker isolation panels which you already stated as not being sufficient.