ᐅ Floor structure of basement slab, basement ceiling, and ground floor ceiling
Created on: 8 May 2014 10:00
K
Kisska86
Hello dear forum members,
we are currently in the planning phase while waiting for the building permit / planning permission, and now we are focusing on the planned floor structure. We are building with a basement, and the basement floor is specified by the thermal insulation certificate and should remain as planned. However, we are not completely sure about the intermediate floors to the ground floor and attic. Underfloor heating will be installed everywhere. We are not planning a ventilation system or central vacuum, so only the usual water and electrical pipes will be laid on the concrete slab.
1. Basement slab: Concrete _2400 250mm (10 inches), PS-035 impact sound insulation 140mm (5.5 inches), PE film 0.20mm, cement screed 50mm (2 inches), tiles 15mm (0.6 inches).
Here are my first questions: We originally planned to use self-leveling screed. Does the thermal insulation certificate need to be adjusted for this, or does it not matter which screed is used? Will the self-leveling screed also be installed at a thickness of 50mm (2 inches)?
2. Basement ceiling / ground floor slab, the architect plans: concrete ceiling 200mm (8 inches), floor buildup 180mm (7 inches).
My questions here: What would be an optimal floor structure if we plan tiles almost everywhere on the ground floor as well? Laminate will be installed in the guest room. We are uncertain about the 180mm (7 inches). Isn’t that too much? Wouldn’t a buildup of 150mm (6 inches) also be sufficient? For example: concrete ceiling 200mm (8 inches), impact sound and thermal insulation 85mm (3.3 inches), self-leveling screed with underfloor heating 50mm (2 inches), 15mm (0.6 inches) tiles or laminate.
3. Ground floor ceiling / attic floor slab, the architect plans: concrete ceiling 180mm (7 inches), floor buildup 160mm (6.3 inches).
Here is our proposal for the exact floor structure: concrete ceiling 180mm (7 inches), impact sound and thermal insulation 65mm (2.6 inches), self-leveling screed with underfloor heating 50mm (2 inches), 15mm (0.6 inches) laminate.
And a completely different question: What do you think of cork flooring with underfloor heating?
I would be very glad to receive opinions and suggestions!
Best regards, Kisska86
we are currently in the planning phase while waiting for the building permit / planning permission, and now we are focusing on the planned floor structure. We are building with a basement, and the basement floor is specified by the thermal insulation certificate and should remain as planned. However, we are not completely sure about the intermediate floors to the ground floor and attic. Underfloor heating will be installed everywhere. We are not planning a ventilation system or central vacuum, so only the usual water and electrical pipes will be laid on the concrete slab.
1. Basement slab: Concrete _2400 250mm (10 inches), PS-035 impact sound insulation 140mm (5.5 inches), PE film 0.20mm, cement screed 50mm (2 inches), tiles 15mm (0.6 inches).
Here are my first questions: We originally planned to use self-leveling screed. Does the thermal insulation certificate need to be adjusted for this, or does it not matter which screed is used? Will the self-leveling screed also be installed at a thickness of 50mm (2 inches)?
2. Basement ceiling / ground floor slab, the architect plans: concrete ceiling 200mm (8 inches), floor buildup 180mm (7 inches).
My questions here: What would be an optimal floor structure if we plan tiles almost everywhere on the ground floor as well? Laminate will be installed in the guest room. We are uncertain about the 180mm (7 inches). Isn’t that too much? Wouldn’t a buildup of 150mm (6 inches) also be sufficient? For example: concrete ceiling 200mm (8 inches), impact sound and thermal insulation 85mm (3.3 inches), self-leveling screed with underfloor heating 50mm (2 inches), 15mm (0.6 inches) tiles or laminate.
3. Ground floor ceiling / attic floor slab, the architect plans: concrete ceiling 180mm (7 inches), floor buildup 160mm (6.3 inches).
Here is our proposal for the exact floor structure: concrete ceiling 180mm (7 inches), impact sound and thermal insulation 65mm (2.6 inches), self-leveling screed with underfloor heating 50mm (2 inches), 15mm (0.6 inches) laminate.
And a completely different question: What do you think of cork flooring with underfloor heating?
I would be very glad to receive opinions and suggestions!
Best regards, Kisska86
Well, the architect is NOT an energy consultant. He can give recommendations, but as ours always says: "The contractors are all smart anyway and will probably come up with 'better' suggestions for you." He did outline the overall structure himself, and the suggestions basically come from him as well. I just wanted to find out here if this makes sense or if someone might have a better tip.
Well, the architect is NOT an energy consultant. He can make recommendations, but as ours always says: "The contractors are all clever anyway and will come up with 'better' suggestions for you." He did provide the overall design himself, and the proposals roughly come from him as well. I just wanted to find out here whether this makes sense or if someone might have a better tip.
B
Bauexperte8 May 2014 14:10Hello Kisska,
You clearly have too much time
And the intermediate floors are not considered in the thermal insulation certificate calculations?
You have little to no influence on the thickness of the ground floor ceiling or the ceiling above the top floor. First, your architect’s plans are already included in the building application, such as in form 153. But the structural engineer also has a say, and—as the previous advice pointed out—a walk-in shower needs space, and you don’t want to see a step or offset in the floor below. And honestly, you have chosen a—so far at least—sensible approach to the house-building adventure. If you start questioning the various components of the planning at this early stage, you might as well have signed with the cheap builder. Their intermediate floors are rarely thicker than 12cm (5 inches).
So far, you have trusted your architect; why do you want to question their specifications now? If you continue with this attitude, your architect will surely have a lot of fun with your construction project.
Best regards, Bauexperte
You clearly have too much time
Kisska86 schrieb:
Hello dear forum members,
we are in the middle of planning while we wait for the building permit / planning permission, and now it's about the planned floor structure. We are building with a basement, and according to the thermal insulation certificate, the basement floor is specified and should remain as is. But we are not 100% sure about the intermediate floors to the ground floor and the top floor.
And the intermediate floors are not considered in the thermal insulation certificate calculations?
You have little to no influence on the thickness of the ground floor ceiling or the ceiling above the top floor. First, your architect’s plans are already included in the building application, such as in form 153. But the structural engineer also has a say, and—as the previous advice pointed out—a walk-in shower needs space, and you don’t want to see a step or offset in the floor below. And honestly, you have chosen a—so far at least—sensible approach to the house-building adventure. If you start questioning the various components of the planning at this early stage, you might as well have signed with the cheap builder. Their intermediate floors are rarely thicker than 12cm (5 inches).
So far, you have trusted your architect; why do you want to question their specifications now? If you continue with this attitude, your architect will surely have a lot of fun with your construction project.
Best regards, Bauexperte
Thank you. But I didn’t actually question anything from the architect or structural engineer... oops:
The architect states a 180mm (7 inches) floor structure on the ground floor. However, he didn’t specify exactly how it should be constructed. The same applies to the upper floor. And what’s wrong with informing myself and making decisions on my own???
Nobody has answered my questions yet...
The architect states a 180mm (7 inches) floor structure on the ground floor. However, he didn’t specify exactly how it should be constructed. The same applies to the upper floor. And what’s wrong with informing myself and making decisions on my own???
Nobody has answered my questions yet...
B
Bauexperte8 May 2014 14:42Hello Kisska,
So why don’t you ask him? Insulation, impact sound insulation, a vapor barrier, underfloor heating, and screed typically add up to the 180mm (7 inch) build-up. This also means you need to decide which final floor covering you want for the rooms, so the screed installer knows what to prepare for.
That you are a complete layperson?
Homeowners make decisions about the floor plan, wall construction, fixtures, and type of technical installations. For all other construction requirements, a professional is needed. Since laypersons generally cannot handle these tasks or verify decisions—although many believe weeks of searching for the right builder makes them experts—I recommend involving external expertise. This way, potential issues can be identified quickly through a four-eyes principle, and the homeowner, who is the client, always has a competent partner by their side to answer all questions clearly.
Best regards, Bauexperte
Kisska86 schrieb:
The architect specifies a 180mm (7 inch) floor build-up on the ground floor. But he didn’t explain exactly how it should be composed. The same applies to the upper floor.
So why don’t you ask him? Insulation, impact sound insulation, a vapor barrier, underfloor heating, and screed typically add up to the 180mm (7 inch) build-up. This also means you need to decide which final floor covering you want for the rooms, so the screed installer knows what to prepare for.
Kisska86 schrieb:
And what’s wrong with informing yourself and making decisions on your own???
That you are a complete layperson?
Homeowners make decisions about the floor plan, wall construction, fixtures, and type of technical installations. For all other construction requirements, a professional is needed. Since laypersons generally cannot handle these tasks or verify decisions—although many believe weeks of searching for the right builder makes them experts—I recommend involving external expertise. This way, potential issues can be identified quickly through a four-eyes principle, and the homeowner, who is the client, always has a competent partner by their side to answer all questions clearly.
Best regards, Bauexperte
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