You can now achieve an insulation standard that you would later only reach by sacrificing ceiling height. -> Thicker insulation on the structural floor.
Whether this will ultimately pay off after xx years is a completely different matter. Without subsidies or incentives, this will likely be financially worthwhile in very few cases.
Whether this will ultimately pay off after xx years is a completely different matter. Without subsidies or incentives, this will likely be financially worthwhile in very few cases.
You need to ask your designer that question. Basically, this area is probably the most sensitive part of the entire house. Because of the concrete slab floor, a thermal bridge often forms in this area. Especially in the base area, you can quickly get condensation and therefore mold.
We did this because it was the final step to upgrade our house from the standard level to KfW55. This allowed us to take advantage of the subsidized loan. The repayment grant amounts to €18,000, the additional cost for the perimeter insulation was €2,500, and there was an extra €3,500 for the energy consultant. So, the calculation was straightforward.
However, this only makes sense if the house is already built close to meeting the KfW55 standard.
However, this only makes sense if the house is already built close to meeting the KfW55 standard.
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