ᐅ Wall thickness of expanded clay aggregate (Liapor) walls only 14 cm
Created on: 1 Apr 2023 18:45
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MisterBorphM
MisterBorph1 Apr 2023 18:45Hello, we are currently in the early selection phase of the builder. This company constructs solid prefabricated houses using Liapor.
Liapor is expanded clay (those small pellets) that is cast into entire walls in the factory, so it is not brick-by-brick. The wall thickness is 14cm (5.5 inches), plus 17cm (7 inches) of thermal insulation.
Of course, it’s not a monolithic wall, but only 14cm (5.5 inches)? After accounting for electrical boxes and empty conduits, that doesn’t leave much material. So, be careful not to drill too deep! I assume the structural integrity is fine, but does anyone have experience with whether that is unusual? Otherwise, we like the company.
Key facts for completeness:
Liapor is expanded clay (those small pellets) that is cast into entire walls in the factory, so it is not brick-by-brick. The wall thickness is 14cm (5.5 inches), plus 17cm (7 inches) of thermal insulation.
Of course, it’s not a monolithic wall, but only 14cm (5.5 inches)? After accounting for electrical boxes and empty conduits, that doesn’t leave much material. So, be careful not to drill too deep! I assume the structural integrity is fine, but does anyone have experience with whether that is unusual? Otherwise, we like the company.
Key facts for completeness:
- Semi-detached house in Baden-Württemberg, 7m x 12m (23 ft x 39 ft)
- Builder: “Hauser Massivbau” Vöhringen
- 14 cm (5.5 inches) Liapor, 17 cm (7 inches) insulation
- Interior walls: 14 cm (5.5 inches) Liapor
- Basement: 24 cm (9.5 inches) Liapor, 17 cm (7 inches) insulation
MisterBorph schrieb:
Hello, we are in the early selection phase of the builder. This one constructs solid prefabricated houses using Liapor.
[...]
Key data for completeness:
- Semi-detached house in Baden-Württemberg, 7m x 12m (23ft x 39ft)
- Builder "Hauser Massivbau" Vöhringen
I would recommend, hopefully in time, to read up here in the forum (or also externally in my post "A Semi-Detached House Has TWO Halves") about the risks of uncoordinated construction of semi-detached houses without the involvement of one’s neighboring half-owner. The italicized term also serves as a useful keyword for searching in the forum.
Specifically regarding a semi-detached house made from Liapor, you can also find the thread here https://www.hausbau-forum.de/threads/einschaetzung-hilfe-doppelhaushaelfte-ca-180-qm-im-diy-grundriss.44978/.
MisterBorph schrieb:
It is expanded clay (these little pellets) cast into entire walls at the factory, so not brick-on-brick. The wall thickness is 14cm (5.5 inches), plus 17cm (7 inches) of thermal insulation.
Of course, it’s not a monolithic wall, but 14cm (5.5 inches)? After sockets and conduit pipes there isn’t much left. Don’t drill too deep! I assume the structural stability is fine, but does anyone have experience if this is unusual? No, unfortunately that is very common — and whether the masonry shell consists of 17.5cm (7 inches) porous bricks, 15cm (6 inches) sand-lime bricks, or 14cm (5.5 inches) expanded clay blocks is mostly a side note.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
11ant schrieb:
Specifically regarding a semi-detached house made of Liapor, you can find the thread here: https://www.hausbau-forum.de/threads/einschaetzung-hilfe-doppelhaushaelfte-ca-180-qm-im-diy-grundriss.44978/... and from the same author, a thread on alternative options: https://www.hausbau-forum.de/threads/blaehton-vor-und-nachteil-dicke-anbieter.44819/https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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Bausparfuchs2 Apr 2023 10:45Every era has its characteristic construction methods.
In the 1970s, oil was cheap, so there was little emphasis on thermal insulation. In the 1950s, building materials were scarce, so porous clay blocks were often used. In the 1990s, people liked to build large houses, and in the 2000s, open-plan living started to become popular—combining living and dining areas and having open living spaces extending up to the roof.
One thing was common to all these periods: hardly anyone considered practicality and common sense, at least in West Germany. In East Germany, there were only two house types. The EW 58 was built almost 300,000 times and cost about 75,000 DDR marks. But these were very solid houses that still meet today's requirements for layout.
I am not a fan of experimental building materials, especially thin-walled constructions with thicker layers of polystyrene insulation than the wall thickness itself. I would never want to build a house like that.
There will always be problems when you want to make structural changes. Installing a kitchen, adding an awning or a patio roof, or simply mounting an extra light fixture—everything becomes complicated.
Try installing an awning on a 14cm (5.5 inches) Liapor wall. You will have your fun with that.
In the 1970s, oil was cheap, so there was little emphasis on thermal insulation. In the 1950s, building materials were scarce, so porous clay blocks were often used. In the 1990s, people liked to build large houses, and in the 2000s, open-plan living started to become popular—combining living and dining areas and having open living spaces extending up to the roof.
One thing was common to all these periods: hardly anyone considered practicality and common sense, at least in West Germany. In East Germany, there were only two house types. The EW 58 was built almost 300,000 times and cost about 75,000 DDR marks. But these were very solid houses that still meet today's requirements for layout.
I am not a fan of experimental building materials, especially thin-walled constructions with thicker layers of polystyrene insulation than the wall thickness itself. I would never want to build a house like that.
There will always be problems when you want to make structural changes. Installing a kitchen, adding an awning or a patio roof, or simply mounting an extra light fixture—everything becomes complicated.
Try installing an awning on a 14cm (5.5 inches) Liapor wall. You will have your fun with that.
Bausparfuchs schrieb:
In East Germany, there were only two types of houses. The EW 58 was built almost 300,000 times and cost about 75,000 East German marks.That sounds like incomplete knowledge from a West German perspective :-(Bausparfuchs schrieb:
There will always be problems when you want to make structural changes. Installing a kitchen, fitting an awning or a patio roof, or just adding a lamp. Everything becomes difficult then.
Try installing an awning on a 14cm (5.5 inches) Liapor wall. You’ll have your fun with that.Personally, I’m not a fan of ETICS either, apart from the spacing, but I live in clay aggregate similar to pumice, and we have all wall cabinets in the kitchens. The boiler repairers chisel into the walls just fine.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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Bausparfuchs2 Apr 2023 13:35Why Partial Knowledge?
There was the EW 58 with subtypes or variants. EW 41, EW 42, EW 52, and EW 65 were adapted versions. Housebuilding was centrally planned and strictly organized, similar to today’s new development areas, where almost all houses look alike. Sometimes rotated, sometimes with a basement or garage, sometimes without, sometimes as a bungalow or a duplex, and so on.
Considering that a Wartburg officially cost around 17,000 DDR marks, but used ones sold on the black market for 30,000 DDR marks, such a house was relatively affordable. Also, the building quality was good.
Prefab houses existed as well. These could be purchased in the Genex catalog for hard currency. The prices are interesting.
Specifically, a prefab house FHE 108, made in the GDR with a construction time of six months in 1986, cost the following:
FHE 108 with finished attic 128,000 Deutsche Marks.
Basement 35,000 Deutsche Marks.
FHE 73 was priced at 103,000 Deutsche Marks.
There was the EW 58 with subtypes or variants. EW 41, EW 42, EW 52, and EW 65 were adapted versions. Housebuilding was centrally planned and strictly organized, similar to today’s new development areas, where almost all houses look alike. Sometimes rotated, sometimes with a basement or garage, sometimes without, sometimes as a bungalow or a duplex, and so on.
Considering that a Wartburg officially cost around 17,000 DDR marks, but used ones sold on the black market for 30,000 DDR marks, such a house was relatively affordable. Also, the building quality was good.
Prefab houses existed as well. These could be purchased in the Genex catalog for hard currency. The prices are interesting.
Specifically, a prefab house FHE 108, made in the GDR with a construction time of six months in 1986, cost the following:
FHE 108 with finished attic 128,000 Deutsche Marks.
Basement 35,000 Deutsche Marks.
FHE 73 was priced at 103,000 Deutsche Marks.
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