ᐅ Which type of foundation slab/construction method to choose and what to watch out for!
Created on: 13 Jan 2020 12:38
A
axelnpunkt
Hello,
I have a few questions regarding slab-on-grade foundations for house construction.
We are now slowly entering the quotation phase and planning a single-family house without a basement (in NRW).
I am assuming it will be a conventional concrete slab, as I have too little information about the so-called Swedish slab.
No underfloor heating will be installed.
However, I am reading about different possible layer structures for this topic.
Therefore, my question here is: what should the optimal setup of a conventional slab-on-grade foundation look like?
Regarding insulation, I have read that it is possible to place the insulation both above and below the slab (is this practical?).
Furthermore, I am wondering if it is correct that simple PVC sewer pipes are no longer permitted and that a multi-utility connection system must be installed for slab foundations without a basement.
Is bitumen membrane or a product like Knauf Katja Sprint installed after the shell is completely erected, or is it applied earlier directly on the slab?
As a layperson, I am trying to gather as much information as possible in advance about the work processes.
Thank you very much for your support.
Axel
I have a few questions regarding slab-on-grade foundations for house construction.
We are now slowly entering the quotation phase and planning a single-family house without a basement (in NRW).
I am assuming it will be a conventional concrete slab, as I have too little information about the so-called Swedish slab.
No underfloor heating will be installed.
However, I am reading about different possible layer structures for this topic.
Therefore, my question here is: what should the optimal setup of a conventional slab-on-grade foundation look like?
Regarding insulation, I have read that it is possible to place the insulation both above and below the slab (is this practical?).
Furthermore, I am wondering if it is correct that simple PVC sewer pipes are no longer permitted and that a multi-utility connection system must be installed for slab foundations without a basement.
Is bitumen membrane or a product like Knauf Katja Sprint installed after the shell is completely erected, or is it applied earlier directly on the slab?
As a layperson, I am trying to gather as much information as possible in advance about the work processes.
Thank you very much for your support.
Axel
Vicky Pedia24 Jan 2020 20:17Nordlys schrieb:
The insulation is actually on top of the bitumen membrane. Of course, gravel is placed under the slab and also in the strip foundations. And there is a PE foil. But insulation under the slab, I'm quite sure, is not necessary.It wasn’t meant as criticism! I agree with you and was just adding some information. And insulation under the slab does exist, although I’m not a fan of it either.Vicky Pedia schrieb:
It wasn’t criticism! I’m on your side and only added some information. And insulation under the slab does exist, even though I’m not really convinced by it.Why? Because it eliminates the thermal bridge between the exterior walls AND the concrete slab.
Vicky Pedia24 Jan 2020 20:42If you choose tiles with two people, you end up with four opinions. I mentioned this for the sake of completeness. Many companies insulate (often for cost reasons) directly on the slab. And in the end, it works. Whether I would do it that way for my next house is another question. But both methods are legitimate.
Vicky Pedia24 Jan 2020 21:59Oh man. Completely objectively, there are two options. Of course, I have my own opinion. For the last 20 houses, the insulation was installed on top. What can I say?
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