ᐅ Modernist Concrete Villa with Cavity Wall Insulation – Experiences
Created on: 11 Sep 2018 07:32
R
rick2018
Hello everyone,
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
rick2018 schrieb:
@guckuck2 Our large wall in the stairwell and the stairs were delivered as exposed concrete with impregnation. However, I want the surface to be even smoother and to remove dirt. So I plan to polish it again. After that, reapplying impregnation makes sense.Exposed concrete is already smooth. Really smooth. I’m not sure how you could make it smoother.
It’s also important to understand that regular formwork concrete, not executed as exposed concrete, will never achieve the finish quality of exposed concrete when ground. The mix and workmanship simply don’t allow for that.
The stairs and wall are explicitly exposed concrete quality. Our other walls are not, but are similar in style. The surface quality can be improved by grinding. The concrete was selected accordingly for this purpose.
Polishing achieves a high-gloss finish, which has less to do with the concrete quality. It then resembles polished natural stone. I only grind to a satin finish.
So even a seemingly smooth wall can be further smoothed. The tactile feel will be different, though. It’s a matter of personal preference what you want.
The advantage is that dirt and splashes are also removed immediately.
Polishing achieves a high-gloss finish, which has less to do with the concrete quality. It then resembles polished natural stone. I only grind to a satin finish.
So even a seemingly smooth wall can be further smoothed. The tactile feel will be different, though. It’s a matter of personal preference what you want.
The advantage is that dirt and splashes are also removed immediately.
rick2018 schrieb:
So, I polished it again. After that, reapplying a sealant makes sense. In our current apartment, the interior wall to the neighbor is made of factory-produced precast concrete elements, filled with cast-in-place concrete. I would say it’s similar to your system.
The surface is perfectly smooth and doesn’t produce any sand. We simply left it as is and haven’t had any problems for 10 years.
I would be concerned about achieving a consistent finish, as sanding and sealing can quickly change the appearance completely.
But you can see the walls yourself and are best able to judge. I really appreciate that you’re getting personally involved and helping out. When you put in the work yourself, the result feels truly yours—whether it’s a huge house or a small cabin!
Best regards! mini
We also considered just leaving the walls as they are and sweeping them off.
Applying a sealant makes sense because it prevents liquids from being absorbed as much, or fingerprints from children...
It’s not absolutely necessary, though.
We want a slight gloss level, and the concrete texture will stand out more.
Sealing usually does not change the appearance as much (or at all) compared to varnishing. As mentioned, I will first test different products in less visible areas.
The photo is somewhat misleading because there is still sanding dust on the wall.
Applying a sealant makes sense because it prevents liquids from being absorbed as much, or fingerprints from children...
It’s not absolutely necessary, though.
We want a slight gloss level, and the concrete texture will stand out more.
Sealing usually does not change the appearance as much (or at all) compared to varnishing. As mentioned, I will first test different products in less visible areas.
The photo is somewhat misleading because there is still sanding dust on the wall.
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