Chatham wrote:Christophe wrote:
Ben you do not know the definition of a passive house (== without heating) be seen wrong ...
Here is another one in the Belgian Ardennes: https://www.econologie.com/maison-passiv ... -3537.html
I know the principle perfectly, but in the Belgian Ardennes it very rarely drops below -5 ° ... we are not in the Vosges or the Jura (where the "little French Siberia" is located ...)
Must read everything before criticizing a remark ...
I visited the site a little more in detail.
Too bad for me, because my house (MOB over 20 years old) has almost the structure (except thickness of the walls and thickness of insulation on the roof) to make a passive house MAIS :
- wood frame: same
- red cedar wood cladding: same
DIFFERENCES :
- superposition of materials and insulators larger and more efficient sealing (For me the thickness of the wall is 20 cms with 15 cms of insulation, with a single polyane sheet under plasterboard inside, and a breathable rainscreen on the outside with cladding).
=> the "wall of this house must have a total thickness of 40 cms.
- filling hollow bodies with clay bricks to create inertia and store heat, which I do not have (partitions in placolatre: the placo is not thick enough nor dense to store the heat). Otherwise a lot of wood except on the floor of the ground floor there is tiling (impression of cold if the heating pipe network heating is not or little power, while with a wood floor no cold sensation That's what I have in the ground floor and rdch rooms).
- greater insulation thickness in the ceiling (40 cms against 20 cms at home).
- Bay windows with triple glazing against double glazing at home.
- no opening (windows or door) on the North side, which is the case at home, but against garage thermal buffer with only 10 cms of insulation between garage and habitat (there is a mistake: it would 15 cms min).
- thickness in the wall reserved for electrical sheaths to avoid air intakes which is not the case with me.
- VMC dual streams , no VMC at home (the proof that it enters a little air because no mold + a lot of wood that regulates hygrometry.
Indeed, we realize that all added, we manage to make a tight cocoon with all the materials indicated.
The unknown remains in the event of extreme cold (-10 to -15 ° C for more than a week), will their single convector be enough to compensate for the nocturnal losses? And if you want to connect more convectors but you don't have the power at the meter => impossible. Or use another source (but no air, no flue, etc.). Good no big deal, you have to put on a fleece of good socks like in the good old days in the countryside; I experienced that with the windows of the rooms frozen inside in the morning (it made beautiful arabesques of ice), but not cold under the big goose down comforter ....
IN RETURNwhen I see the price to pay: 300 000 euros, I find the salty addition, but hey I have more current reference to compare.
If I had to build today, I will make the comparison between the additional cost in wood frame, insulation, inertia, VMC compared to underfloor heating.
They use a convector for cold days (see November this year), but last winter was mild .... and we have no certainty about the future (in case of slowdown of the Gulf Stream: disaster scenario cooling in the Northern Hemisphere).
For now, ecologically it is top, when the amortization period of the extra cost to the construction I do not know how many years it will take to compensate for this extra cost.
For my part the heating + ECS natural gas costs me about 1100 euros per year ...... for now!
