In a stone house, you probably don't have plastic wrap? Possibly a foam board between two thick layers of concrete or continuous aerated concrete, but then the walls become quite thick.kamilenski said:
Then you should probably avoid thinking about passive houses altogether. Low-energy house is a better name. Passive house is even a protected product name, isn't it? Either you consume energy to build excessively, or you consume energy continuously during the house's lifespan. It's a trade-off between these two extremes, which becomes extra difficult to calculate when our climate varies from Arctic to Mediterranean temperatures depending on the season.
Uncertainties are future energy prices and heating methods. Suppose someone comes up with a way to make an air-source heat pump with a COP of 10.0, then a "passive house" suddenly becomes quite uninteresting.
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The walls become thicker if they are made of stone, as it insulates worse. I would build with wood. But one effect some strive for is the stone's ability to store energy. In some cases, this can be utilized in a clever way.kamilenski said:
To begin with, I don't think one should mix up the concepts between materials being breathable and being airtight in cases where we're talking about low involuntary ventilation. Leca and many other materials are airtight because you can try to see how much air you can blow through a Leca wall compared to where the level is set there.
But the fact that the material can breathe out or absorb moisture is a whole different ball game, as even Styrofoam breathes in that sense.
Then I doubt anyone can build a passive house with Styrofoam since it can't store heat and cold, but I've seen somewhere where they inflated a dome or a tent-like structure which they then sprayed with PU foam, so when it hardens, it becomes a strong and well-insulated construction but very light, which needs to be anchored to the ground.
But sure, you can use Styrofoam in stone houses to get the advantages of a heavy construction and still well-insulated, or what were you thinking about?
But the fact that the material can breathe out or absorb moisture is a whole different ball game, as even Styrofoam breathes in that sense.
Then I doubt anyone can build a passive house with Styrofoam since it can't store heat and cold, but I've seen somewhere where they inflated a dome or a tent-like structure which they then sprayed with PU foam, so when it hardens, it becomes a strong and well-insulated construction but very light, which needs to be anchored to the ground.
But sure, you can use Styrofoam in stone houses to get the advantages of a heavy construction and still well-insulated, or what were you thinking about?
I "don't think." I know nothing about passive houses. I rather thought that a passive house should preferably be built in pure insulation. So that no heat can leave it and no cold can penetrate.
That FTX would ensure keeping the indoor temperature at the same level.
For me, stone doesn't insulate as well as styrofoam (for example). That would mean extensive leakage of both heat and cold depending on the outdoor temperature.
Those of you who know about this new technology, feel free to refer to/explain the idea behind this.
That FTX would ensure keeping the indoor temperature at the same level.
For me, stone doesn't insulate as well as styrofoam (for example). That would mean extensive leakage of both heat and cold depending on the outdoor temperature.
Those of you who know about this new technology, feel free to refer to/explain the idea behind this.