Hello everyone,
we are having a standard house (formerly kfw70 standard) built without a basement.
After endless disputes with the site manager, he was replaced, and the new site manager discovered that the perimeter insulation was forgotten.
We are now completely uncertain whether our build can still be saved, as demolition has even been mentioned...
It is now being investigated whether this insulation can be installed retroactively on the foundation slab.
Does anyone here have solid experience with this and can offer advice on how we should proceed? Should we agree to retrofitting the insulation, or is that not viable at all?
we are having a standard house (formerly kfw70 standard) built without a basement.
After endless disputes with the site manager, he was replaced, and the new site manager discovered that the perimeter insulation was forgotten.
We are now completely uncertain whether our build can still be saved, as demolition has even been mentioned...
It is now being investigated whether this insulation can be installed retroactively on the foundation slab.
Does anyone here have solid experience with this and can offer advice on how we should proceed? Should we agree to retrofitting the insulation, or is that not viable at all?
No, you’re not writing in Turkish. What you mean is already understandable. I just consider it careless. My concern is not the heating costs, but the calculation for the entire building, which must comply with the energy saving regulations. A insulated ground slab was planned and included in the calculations here. If that is omitted, the calculation no longer works, and the thermal insulation certificate will no longer be valid. This certificate must be accurate for the permit to be valid. This cannot be compensated with just a few dollars.
I already suggested a solution above: improve the insulation on the ground slab.
I already suggested a solution above: improve the insulation on the ground slab.
From a purely technical perspective, I agree with the same approach. To prevent a house without a basement from having a cold floor, you can use concrete, then a bitumen waterproof membrane as a moisture barrier, followed by insulation material, then the heating pipes, and finally the screed. This method also works. So technically, there is still a way to fix it. It’s not unusual at all; it has been built this way thousands of times. Karsten
When it comes to potential subsidies, this is actually quite relevant and must be checked! However, what Karsten wrote is correct. As long as no concrete core activation has been integrated, it is perfectly fine to insulate directly on the slab. In this case, either use a thicker layer or higher-quality material.
Hello and thank you for your replies – they at least make me feel optimistic that there is still something that can be done.
And yes, we are building without a basement, and currently only the ground floor foundation walls are in place. The brick cladding is already complete, but it will have to be removed because it was poorly installed and created some thermal bridges around the entrances and exits.
All of this was discovered by our "new" site manager, after the first site manager, in my opinion, did not pay nearly enough attention to our build.
And yes, we are building without a basement, and currently only the ground floor foundation walls are in place. The brick cladding is already complete, but it will have to be removed because it was poorly installed and created some thermal bridges around the entrances and exits.
All of this was discovered by our "new" site manager, after the first site manager, in my opinion, did not pay nearly enough attention to our build.
OK, it seems a specialized lawyer is unavoidable, at least for an initial consultation. A thicker insulation layer under the screed can be compensated by adding an extra row of bricks in the ground floor.
However, this changes the total height and must be at least notified (e.g., building permit / planning permission)!
Beyond that, my knowledge of the paperwork does not go further.
Regards, Joe
However, this changes the total height and must be at least notified (e.g., building permit / planning permission)!
Beyond that, my knowledge of the paperwork does not go further.
Regards, Joe
K
Knallkörper25 Jun 2017 10:43The brick facing was applied before the ground floor ceiling was installed?? I've never heard of that before.
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