ᐅ Adding Insulation to a Prefabricated House Yourself, Affordable Polystyrene Options
Created on: 18 Sep 2012 09:23
V
VanTide
Hello everyone,
My prefab home supplier is offering me a standard low-energy house KfW 70.
I have now received a price for upgrading to an insulation package for KfW 55, and I noticed that only the insulation in the roof and upper floor changes. The exterior walls are already basically at the KfW 55 standard and are not further reinforced with this package. The cost of the package is about 6000 euros.
My question to the experts is: Can I simply take the standard package and add additional insulation myself in the attic?
For example, just line the entire attic with Styrofoam since no one really accesses the roof anyway.
How do you assess this approach?
Thanks and good luck.
My prefab home supplier is offering me a standard low-energy house KfW 70.
I have now received a price for upgrading to an insulation package for KfW 55, and I noticed that only the insulation in the roof and upper floor changes. The exterior walls are already basically at the KfW 55 standard and are not further reinforced with this package. The cost of the package is about 6000 euros.
My question to the experts is: Can I simply take the standard package and add additional insulation myself in the attic?
For example, just line the entire attic with Styrofoam since no one really accesses the roof anyway.
How do you assess this approach?
Thanks and good luck.
Hi, I have the values now. Can you tell me if an air-to-air heat pump combined with a wood stove in the living room is sufficient for winter, and approximately how much electricity my air-to-air heat pump will consume? The calculations are based on a temperature of 19°C (66°F), but I prefer around 22°C (72°F). The calculation is without using the wood stove.
15.7 kWh per m² (square meter) final energy demand and 38.5 kWh per m² primary energy demand.
Solar and internal gains 8000
Losses 16000
Approximately 560 m³ (cubic meters) volume.
However, all calculations are without considering the wood stove.
Thank you.
15.7 kWh per m² (square meter) final energy demand and 38.5 kWh per m² primary energy demand.
Solar and internal gains 8000
Losses 16000
Approximately 560 m³ (cubic meters) volume.
However, all calculations are without considering the wood stove.
Thank you.
VanTide schrieb:
...Hi, I now have the values .... Which values? The ones from the Energy Saving Ordinance / KfW verification? You can safely disregard those, as it is not permitted to size a heating system or make statements about demand or consumption based on their result parameters!VanTide schrieb:
...can you tell me if an air-to-air heat pump combined with a wood stove in the living room is sufficient for the winter and roughly how much my air-to-air heat pump will consume? .... It seems you have absolutely no understanding of the topic! 😕Best regards
€uro schrieb:
There might be an Energy Saving Ordinance/KfW certificate (draft).
Best regards.That’s exactly what you wanted. I have 25 pages of values and am a layperson.
You are right, I don’t understand anything because I’m not a professional, which is why I’m here in the forum.
VanTide schrieb:
You are right, I don’t understand anything because I am not a professional, that’s why I am also in this forum.Could it be that you might be expecting a bit too much from the forum?
Sizing of your heating system?
VanTide schrieb:
you are right, I don’t understand anything because I am not a professional, that’s why I am in this forum.Hello VanTide,
First of all, here is some information you probably missed. €uro earns a living doing exactly these kinds of calculations. Occasionally, he shares some general advice on what usually isn’t cost-effective (for example, solar thermal systems) in the forum, but he will not design your heating system for free. Surely, you don’t work for free for your employer or client either.
So, if you want your heating system to be designed properly, hire €uro or another professional and pay for their service, or install the heating system as you see fit and accept the consequences.
The other non-professionals in this forum won’t be able to provide you with reliable advice on such a complex subject anyway.
Best regards,
Musketier
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