ᐅ Difference between Poroton Bricks Wienerberger T10 Filled and Unfilled

Is there a difference between Poroton bricks Wienerberger T10 filled and unfilled?
Does one have advantages that are offset by disadvantages of the other, or is one clearly preferable?
Our company builds with unfilled T10. Is that still up to date?

The solid brick provides significantly better insulation. However, this is usually not necessary, unless KFW 55/40 standards are required.

The filled version has thicker webs and is probably significantly better in terms of sound insulation. However, you can't be sure what will happen to the filling in 20 years. Some people claim that perlite fillings settle over time, which could leave you with a very poorly insulated house after 20 years.

Whether this is true, I have no idea...

We originally planned to build with T18 panels, but ended up using T14 (unfilled) because the T18 were not available. Looking back, I should have insisted on the T18; the T14 are borderline when it comes to fixing and mounting cabinets. The sound insulation is also worse, but that is not an issue for us.

I would only use unfilled T10 in an absolutely quiet area, and you should be aware that you will probably need adhesive anchors for wall cabinets. For T14 panels, standard FU and UX Fischer plugs still just about hold.

Best regards,

Andreas

Sound travels faster through air (the continuous air in the large cavities, not the air in the bubbles), while heat is better slowed down by differences in density (constant "stop & go" between air and denser solid material). Filling the chambers can settle over time and cannot be refilled. Loose fill insulation can be blown into "closed" cavities. Therefore, I see little benefit in filling separate large cavities.

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I often wonder in these discussions about building materials whether the reasons given against certain materials (in this case, potentially settling insulation) are truly relevant in practice or if they are more theoretical or based on isolated cases. It would also be important to first define what type of insulation is being discussed. For example, why would mineral wool inside a brick settle if it doesn’t get wet? Some critics say that with perlite, when cutting the brick, the insulation just falls out—although videos on YouTube show something quite different, and the material holds together well.

I believe there is a lot of lobbying behind this as well. Almost all websites about construction seem to consist mainly of paid content.

Alex85 schrieb:
I always wonder in these discussions about building materials whether the reasons against certain materials (in this case the potentially settling infill) are really relevant in practice.

If the infill does settle, that means the same cavity appears again in the upper part of the deep foundation holes as if there were no infill at all. If that is not considered significant, it would imply that the extra effort and cost are unnecessary. And THAT would be important to me. I would be frustrated as someone spending extra money only to find it was wasted.

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