Poroton 36.5 or 42.5 Perlite or MW

36.5 or 42 doesn't really make that much of a difference, you can look at all the data for each stone....

Whether Perlite or Mw, it doesn't matter at all, as long as it's filled....

Hi,
would the Poroton T7 36.5 also be filled? The unfilled ones are so delicate, I would be very worried about the sound insulation.

I also thought about it forever back then. From today's perspective, I consider the issue very overrated. Today I would simply build with 17 or 24 sand-lime bricks and ETICS in front. Sound insulation and heat protection in summer is much more important than the last few percent savings on heating costs.

Best regards,

Andreas

Yes, hindsight is always 20/20.... and there are pros and cons for everything.... having plastic on the wall isn't exactly nice either and I wouldn't do it without a ventilation system....

Having plastic on the wall is not so nice either and I wouldn’t do it without a ventilation system ....

ETICS (not everything is plastic) has nothing to do with a ventilation system. Monolithic is just as hermetically sealed as with ETICS. Ventilation system always!

Kalksand+WDVS or filled bricks. Under no circumstances use the unfilled bricks, that is the absolute worst crap (which unfortunately is still often sold in the South due to wrong advice and price, we also took them and regret it). Thermal insulation whether 36.5 or 42.5 is completely irrelevant, you won’t notice it later at all in the heating costs.

Personally, I would only take 36.5 filled with Perlite. Mineral wool also does not have a big disadvantage, just experience from acquaintances. They have Perlite and are very satisfied.

ETICS (not everything is plastic) has nothing to do with a ventilation system. Monolithic is just as hermetically sealed as with ETICS. Always ventilation system!

Well, but you also have to keep an eye on the costs ....
I think KS+ETICS+controlled residential ventilation is the most expensive solution.
Neighbor therefore left out the controlled residential ventilation

If I have to leave it out, then I don’t want ETICS but prefer bricks...

If I have to omit them, then I don’t want ETICS but prefer bricks...

That’s what the gut says, not the mind ;). I would rather give up another small thing and install a decentralized ventilation system. 350€ per unit and only one power cable plus core drilling. That should always be included in new buildings.