poseva
Joined 7 years ago
Joined 7 years ago
I'm actually a structural engineer with a passion for passive houses and went into programming 8 years ago. I designed and built a lot of houses and I know what you're talking about.. the house builders chase profits disregarding any laws.
IMHO the best thing is to buy a lot and build yourself the house, this way you are sure that you get what you want.
Why don't you consider buying the house with a bank loan? it's the best decision to do so even if you have all the money... if you talk with a financial consultant you'll see why.
Housing prices are not out of control, we are lagging years behind other European countries in regard with house prices. If you look on the numbers you will see that this is actually a good time to buy a house in Romania.
As I have a small child and use a lot the telemedicine services I do have a fear that I will be blocked soon.
A drawback to this is that cloudflare does not allow you to forward to multiple email addresses.
[0] https://www.nytimes.com/2022/08/21/technology/google-surveil...
2. I would change the windows, with at least triple pane. The windows must be mounted correctly (see RAL montage) and also must be placed aligned with the outside face of the wall.
3. I would take out the floor, and do hydronic underfloor heating with EPS150 or XPS as insulation substrate.
[0] https://www.rothoblaas.com/products/airtightness-and-waterpr...
[1] https://www.rothoblaas.com/products/airtightness-and-waterpr...
I saw an example at some point in one of PassivHaus presentation and it was like this:
0.3 ACH -> 1.74 kWh/m2year (for a 100 sqm house means, 174 kwh per year for heating)
0.6 ACH -> 3.49 kWh/m2year (PassivHaus limit)
1.0 ACH -> 5.81 kWh/m2year
1.5 ACH -> 8.72 kWh/m2year (Low energy house limit)
4.5 ACH -> 26.5 kWh/m2*year (typical house)
This is for the same house with the same insulation. Of course you cannot achieve this kind of airtightness without careful planning and using a lot of self-adhesive tape (SIGA, ROTHOBLASS and other manufactures that can guarantee its effectiveness up to 50 years)
Recently in Romania it really took of building houses using CLT (cross-laminated-timber) but it costs so much more than a regular brick and mortar house that few people afford it.
When -15 outside and 20 degrees inside, my house requires 2000W to keep the balance. This kind of simulations are done using PHPP package from PassivHaus Institut.
L.E. What I wanted to point out, thermal mass can have a huge impact on the house energy footprint.. to give you an example, today and tomorrow will be sunny days and this will drive my interior temp to about 23-24 degrees, this heat will heat-up the masonry and slabs and then give me back the heat in the next days when there will be no sun.