ᐅ Hollow Clay Bricks: Filled vs. Unfilled

andimann schrieb:
Hi WildThing,
Glad to hear you’re happy with everything. Are you already living in the house? How is the sound insulation? Honestly, I’m a bit concerned about our T14 bricks, even though we live in a very quiet neighborhood.

We have been living in the house for 3 weeks now, but the exterior plastering isn’t done yet—it will be done once we have the budget again.
We don’t hear anything from outside, but it’s generally a quiet area here as well. Occasionally, there’s a loud motorcycle or some cars, and otherwise just pedestrians and cyclists passing by. Inside, it’s completely quiet. What stands out more is the difference compared to the old drafty wooden windows—you can’t hear anything at all when they are closed.

We have a 36 cm (14 inch) wall, but you could also opt for a 42 cm (16.5 inch) wall if you’re worried about sound insulation. What exactly do you mean? Are you concerned that you might hear cars through the brickwork from outside? For example, a dishwasher running inside is definitely louder than anything you would hear from outside, as long as the windows are closed.

I also believe that if there is a problem, it is more likely related to the windows or roller shutter boxes rather than the bricks.

There are differences between manufacturers for the T8 and T9 bricks as well. For example, the T9 bricks from Bellenberg have significantly better bulk density and load-bearing capacity compared to those from Schlagmann. We chose the T9 from Bellenberg specifically for this reason. Looking at the webs and the waste on the construction site, I have to say that these bricks hardly crumble at all. They are very sturdy! It’s a different story with the T8 bricks from the neighbor’s house… there are break points throughout the masonry, and those bricks really do crumble easily.

I doubt that the stone will have the same U-value when the cavities are filled. The many cavities in the stone serve as insulation; enclosed air layers are one of the best forms of thermal insulation and are taken into account accordingly in the calculation of the stone.

Just take a look at the datasheets of the two types of bricks instead of spreading half-knowledge. You will then see that the U-values are exactly the same...

Hello Wildthing, are you still satisfied with your unfilled T9 in 36.5cm (14.4 inches)? We want to use the unfilled T8 from Wienebeger or Schlagmann ...