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.
V
VanTide
18 Sep 2012 15:28
Hi, what are some affordable different sources for brine heat pumps?
€uro
18 Sep 2012 17:56
VanTide schrieb:
Hi, what are some cost-effective different sources for brine heat pumps?
For example, surface or trench collectors in narrow or wide designs. After planning and sizing, it is possible to carry out almost the entire source installation using your own labor.

Best regards
V
VanTide
18 Sep 2012 18:25
What do you think something like this would cost, including heating?
€uro
18 Sep 2012 19:39
VanTide schrieb:
What do you think something like this would cost including heating?
This can only be estimated once the preliminary analysis has been completed. Then the actual demand (capacity, energy) for heating and domestic hot water is known. This leads to the appropriate heat pump, the extraction capacity, and the energy required from the source, which determines its necessary design (size) and finally the material costs involved.
In any case, it is significantly cheaper than a vertical borehole drilled by a drilling company. The rest is as usual => specification of the type of heat emitters, heat emitter calculation, pipe hydraulics, etc.


Best regards.
V
VanTide
18 Sep 2012 20:35
What information should I obtain from the FHB?
€uro
19 Sep 2012 07:55
VanTide schrieb:
What details do I need to obtain from the prefabricated house manufacturer?
The basic framework of the building must be available, meaning dimensions (drawings) as well as definitions of the components. If applicable, an energy-saving regulation / KfW certificate (draft) may exist.

Best regards