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
Harakiri schrieb:
@rick2018: Alright, that would be the option currently planned for us (of course without the Alucobond cladding, as plaster is also nice…).
Just out of curiosity, what insulation thickness and material did you choose? I am considering (if cavity insulation overall is too expensive) having both the below-grade and exposed surfaces insulated entirely with XPS.What advantages do you expect from using XPS instead of EPS on the facade?
@rick2018: For practical reasons, we decided against using a ventilated façade—mainly due to costs, and also because the overall wall buildup would have become disproportionately thick compared to our small building volume.
However, I thought that a ventilated curtain wall façade generally doesn’t affect the insulation itself, at least not in terms of increasing the thermal resistance of the construction. Its main function is more to support moisture transport and cooling from solar radiation.
@guckuck2: I’m especially considering using XPS boards with HFO-1234ze as the blowing agent to achieve better insulation performance at the same thickness. So far, I haven’t found a similar option from any manufacturer for EPS. Additionally, I hope it’s more resistant to moisture and avoids a drastic material change within the insulation layer. Since the basement floor is partially underground but also has a terrace on top of the “basement roof,” it would be necessary to switch from XPS to EPS and then to PIR within less than 2 meters (6.5 feet), which seems a bit unusual to me.
But I don’t want to hijack rick’s thread—I'll create a separate one for this topic at some point.
However, I thought that a ventilated curtain wall façade generally doesn’t affect the insulation itself, at least not in terms of increasing the thermal resistance of the construction. Its main function is more to support moisture transport and cooling from solar radiation.
@guckuck2: I’m especially considering using XPS boards with HFO-1234ze as the blowing agent to achieve better insulation performance at the same thickness. So far, I haven’t found a similar option from any manufacturer for EPS. Additionally, I hope it’s more resistant to moisture and avoids a drastic material change within the insulation layer. Since the basement floor is partially underground but also has a terrace on top of the “basement roof,” it would be necessary to switch from XPS to EPS and then to PIR within less than 2 meters (6.5 feet), which seems a bit unusual to me.
But I don’t want to hijack rick’s thread—I'll create a separate one for this topic at some point.
@Harakiri Insulation is not just about keeping out the cold, as you already mentioned. Especially with heat, proper ventilation behind the cladding helps a lot. But it also provides some benefit against the cold.
For us, insulation wasn’t the main factor; it was more about the appearance.
If I could have achieved that look more affordably, we would have gone for it.
For us, insulation wasn’t the main factor; it was more about the appearance.
If I could have achieved that look more affordably, we would have gone for it.
D
Daniel-Sp15 May 2020 08:47Hello rick2018,
which outdoor Wi-Fi access point have you planned? Inside the house, I am using the Ubiquiti UniFi NanoHD and am very satisfied with it. However, they are only approved for indoor use. The Access Point Pro models are no longer quite up to date. I am considering using the AC Mesh Pro. What did you decide on?
Regards, Daniel
which outdoor Wi-Fi access point have you planned? Inside the house, I am using the Ubiquiti UniFi NanoHD and am very satisfied with it. However, they are only approved for indoor use. The Access Point Pro models are no longer quite up to date. I am considering using the AC Mesh Pro. What did you decide on?
Regards, Daniel
D
Daniel-Sp15 May 2020 09:28You can report back soon; I still need to run the cable. One more question: Ubiquiti recommends installing a surge/lightning protector at both ends of the outdoor cable. Did you implement it that way?
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