R Scott wrote:Where are you? What climate?
There are places where you definitely want insulation and places where you want to tie the floor into the constant temperature of the earth.
leila hamaya wrote:i'm not seeing where theres bad advice here, just brainstorming ideas. when you brainstorm not everything you think of will work out, but thats the point of brainstorming...exploring the possibilities. actually i think some of these ideas are good.
i will trust people have enough critical thinking skills to separate out the good suggestions from the ones that wont work. i am particularly interested in this right now, as i have been reading and exploring similar things, different forms of insulation, and am also wondering what natural and/or cheap and not industrial materials, can be used as insulation below, or at grade, for a floor.
so i am curious to listen to whatever anyone may suggest, even if its not all the best ideas. of course it matters whats below the floor, particularly if its very wet, near the water table, or clay, rather than a hard, solid gravelly ground or whatever else.
something i was discussing with a builder friend is creating a thermal break under a floor under a rocket mass heat. he was suggesting two layers of plastic sheeting with a thick (4-6 inches) layer of ash between them. then 1-2 ft above that of earthen floor, clay/sand rocks or something along these lines.
that was kinda surprising and not even close to what i was originally thinking...more like the sand and perlite suggested here.
Philippe Elskens wrote:Also, do you mean measuring the ground temperature when you say 'soil test'? Or do you mean testing the composition of the soil? If the latter, why would that be important?
Philippe Elskens wrote:Leila, I was thinking along the same lines.
It will rarely freeze in Portugal.
However, I am not sure what the ground temperature is exactly. This will be below comfort temperatures I assume. So if my internal thermal mass transitions continuously to the underlying ground, will it be hot enough? I'm trying to figure out exactly how fast the heat would be drained from my thermal mass.
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