Hello everyone,
We are finally back in the planning phase. A plot of land has been reserved.
We want to build a country house of about 180 m² (1,940 sq ft).
We are really just at the very beginning when it comes to the wall construction.
The first suggestion was 17.5 cm (7 inches) Poroton blocks plus insulation.
I think this is the cheapest construction method.
From what I have read so far, this might not be the best way to build.
What wall construction do you have and why?
What KfW standard have you achieved with it?
How satisfied are you with it?
I am also interested in experiences with walls insulated using styrofoam.
Thanks, Xinette
We are finally back in the planning phase. A plot of land has been reserved.
We want to build a country house of about 180 m² (1,940 sq ft).
We are really just at the very beginning when it comes to the wall construction.
The first suggestion was 17.5 cm (7 inches) Poroton blocks plus insulation.
I think this is the cheapest construction method.
From what I have read so far, this might not be the best way to build.
What wall construction do you have and why?
What KfW standard have you achieved with it?
How satisfied are you with it?
I am also interested in experiences with walls insulated using styrofoam.
Thanks, Xinette
36.5cm (14.4 inches) T10 block + interior plaster + exterior plaster. According to the energy-saving regulations, just short of KfW 70 standard (we have a gas condensing boiler).
I don’t want to wrap myself in plastic.
But this doesn’t help you much, because several other factors also come into play. The house also includes the roof and the windows.
I don’t want to wrap myself in plastic.
But this doesn’t help you much, because several other factors also come into play. The house also includes the roof and the windows.
I have 17.5cm (7 inches) aerated concrete, 12cm (5 inches) mineral wool insulation, 2cm (0.8 inches) air gap, and then another 11.5cm (4.5 inches) of brick veneer. The basement is estimated to have 30cm (12 inches) of concrete (pressure-waterproof version) with 12cm (5 inches) of external insulation. With this setup, I have an official KFW 70 standard, although the house with a ground source heat pump and central controlled ventilation is performing well below that.
36 cm T9 Poroton bricks without exterior thermal insulation composite system (ETICS). Insulated ground slab. Easily reached KfW 70 standard, not far from KfW 55. Why did we build this way? Poroton is recyclable, while polystyrene insulation is considered hazardous waste. Do you really want to live in hazardous waste? Okay, this was a secondary thought; what mattered most to us was that good bricks provide heat protection in summer, unlike polystyrene. For our house, there was no price difference.
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