ᐅ Which type of stone is best for exterior walls?

Created on: 28 Dec 2014 17:38
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thomas_neo
Hello everyone,

We are currently planning our single-family home in the Stuttgart area. Apart from the exterior wall, most details are already decided. The house will be built in a quiet residential area with underfloor heating and gas.

I have received three options:

1. 17.5 cm (7 inches) brick + external thermal insulation composite system (ETICS) (standard wall) with no extra cost.
2. Ytong 36.5 cm (14 inches) block – if I may call it that – with a thermal transmittance of 0.23 W/m²K – additional cost: €8,900.
3. Poroton with 0.19 W/m²K – additional cost: €12,200.

I don’t really want to insulate my house with expanded polystyrene (EPS). I’m not a fan of that. Now I’m hesitating between options 2 and 3. What would you recommend?

Thank you very much.
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thomas_neo
2 Jan 2015 12:16
Hello Dirk,

Thank you very much.
I also think that a monolithic approach is probably the best option. Although a thermal insulation composite system certainly has its advantages as well. But like with your parents, I could still pack up the house.

Best regards,
Thomas
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thomas_neo
2 Jan 2015 23:57
So, I think it’s decided: monolithic construction + central ventilation system with heat recovery
lastdrop3 Jan 2015 08:34
That's right. Which type of brick?
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thomas_neo
3 Jan 2015 11:26
99.9% Poroton.
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Zeltli
3 Jan 2015 13:15
And which Poroton? We also want to build with Poroton (36.5cm (14.4 inches)), and we were offered the T10, but I’m unsure whether the T9 or T8 might actually be better...
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thomas_neo
3 Jan 2015 20:18
From Wienerberger Poroton Plan T8-36.5