ᐅ Exterior walls made of aerated concrete, interior walls of calcium silicate bricks – yes or no?
Created on: 1 Aug 2017 15:32
G
GelbesT
Hi,
There are many different opinions online, but I wanted to ask specifically here. Our house is planned to be built with 42cm (17 inches) aerated concrete blocks (lambda 0.08). Since I like to listen to music loudly and we also have two children, the idea came up to use calcium silicate blocks for the interior walls. The building company would include the calcium silicate blocks in the offer at the same price and said that cracking is not to be expected.
What is your opinion on this? In principle, aerated concrete and calcium silicate are compatible because of their similar shrinkage behavior. But there is still a residual risk, right? Nevertheless, large companies often use this combination as standard (e.g., Arge Haus).
What do you think?
(No, we will not be using soundproof interior doors).
There are many different opinions online, but I wanted to ask specifically here. Our house is planned to be built with 42cm (17 inches) aerated concrete blocks (lambda 0.08). Since I like to listen to music loudly and we also have two children, the idea came up to use calcium silicate blocks for the interior walls. The building company would include the calcium silicate blocks in the offer at the same price and said that cracking is not to be expected.
What is your opinion on this? In principle, aerated concrete and calcium silicate are compatible because of their similar shrinkage behavior. But there is still a residual risk, right? Nevertheless, large companies often use this combination as standard (e.g., Arge Haus).
What do you think?
(No, we will not be using soundproof interior doors).
If the structural engineer says so, it is probably correct. Currently, our maximum will be 175mm (7 inches), and only for a small part. However, we are using sand-lime bricks on the exterior, not aerated concrete. The architect already mentioned that if the structural engineer is not satisfied, the first step would be to increase the raw density—there are different variants for sand-lime bricks—and only then increase the thickness.
truce schrieb:
As a load-bearing wall, we have the 24cm (9.5 inches) sand-lime brick wall in the center of the house. [...] As a layperson, I assumed this was correctAnd it is. Depending on how many load-bearing walls there are (and the distance between them) sharing the loads, a 24cm (9.5 inches) wall is perfectly appropriate. If planners use 17.5cm (7 inches) walls almost everywhere except for the WC, pantry, wardrobe niche, and shower partition wall, the situation naturally looks different. However, that also means fewer walls are removable.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
T
toxicmolotof2 Aug 2017 17:25Cracking* is not to be expected... ask him to provide that in writing.
*Cracks will occur, regardless of the material and even if the same material is used everywhere. Guaranteed.
*Cracks will occur, regardless of the material and even if the same material is used everywhere. Guaranteed.
P
Peanuts744 Aug 2017 11:13Alex85 schrieb:
@truce what do you use 24cm (10 inches) sand-lime bricks for inside? Is it a special request? Typically, 24cm (10 inches) sand-lime bricks are used for basement exterior walls. Our basement exterior wall is 30cm (12 inches). But I agree with you, 17.5cm (7 inches) would normally be sufficient for load-bearing walls...
Peanuts74 schrieb:
17.5cm (7 inches) would normally be sufficient for load-bearing walls... 24cm (9.5 inches) is not chosen without reason or excessive caution. I can easily imagine a 17.5cm (7 inches) wall being sufficient as a support under a continuous ceiling, but less so as a bearing point for two adjacent ceiling sections.
And, as I said, designing (almost) all interior walls as load-bearing has two sides – then you simply can’t remove any without replacing them with something else.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Similar topics