ᐅ Wall thickness of expanded clay aggregate (Liapor) walls only 14 cm
Created on: 1 Apr 2023 18:45
M
MisterBorph
Hello, 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:
Expanded clay aggregate is probably no longer exactly experimental, but asbestos was once a new material with great properties too. Expanded clay aggregate is, loosely speaking, the “vegan alternative” if you want a wall builder with pumice-like properties without relying on volcanic activity ;-)
MisterBorph schrieb:
However, when building stone-on-stone or to the KfW 55 standard, there’s almost always insulation foam in front. And supposedly you can also fix things into expanded clay aggregate. MisterBorph schrieb:
So only monolithic? Is your house KfW 55? I’ve heard the walls have to be quite thick for that. [...] Stove repairman? 🙂 I didn’t get that. I rent and have lived multiple times in monolithic pumice block houses of my era. The 30cm (12 inch) thick walls were cut for pipe installation back then; the nicknames come from building services engineers who install heating systems. I already mentioned that here we have completely normal wall-mounted kitchen cabinets. The non-KfW-subsidized Efficiency House 55 according to the building energy regulation by no means necessarily requires external thermal insulation composite systems (ETICS), and such systems do not have to be exclusively petrochemical foam boards as alternatives.
MisterBorph schrieb:
Thanks, but fortunately we are still in good contact and often meet together with the supplier. Of course, who knows what will happen in the end. But even if everyone chooses a different supplier, we still want to build in a coordinated way, both in terms of timing and other aspects. From my point of view, the latter is clearly the most important.
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