Hello everyone,
we are currently planning our house, and our developer is offering us 40 cm (16 inches) Ytong for the exterior walls. Some time ago, I spoke with an independent building expert because I was looking for the right type of block in terms of
- sound insulation between rooms
- summer heat protection
- winter thermal insulation
He said that the only material that really protects longest against the sun is sand-lime brick with an external thermal insulation composite system (ETICS) (for example, 17.5 cm (7 inches) sand-lime brick with 16 cm (6 inches) ETICS, possibly in other versions or as a natural product). According to him, this is the only way to keep the heat out in summer, retain heat inside in winter, and also provide sound insulation. For sound insulation, I could also use Ytong on the outside and sand-lime brick on the interior walls, but this requires careful workmanship (groove cutting) to prevent cracks in the walls.
From the interior perspective, he said that sand-lime brick retains the heat from a stove or similar sources better than Ytong.
So now I’m stuck... I’ve really done some research... but I’m confused again :-(
Can anyone help? To what extent is choosing sand-lime brick maybe considered "old-fashioned or cheap"? Or is Ytong with sand-lime brick interior walls the optimal solution?
Thanks in advance... please have mercy on a building beginner ;-)
Best regards,
Markus
we are currently planning our house, and our developer is offering us 40 cm (16 inches) Ytong for the exterior walls. Some time ago, I spoke with an independent building expert because I was looking for the right type of block in terms of
- sound insulation between rooms
- summer heat protection
- winter thermal insulation
He said that the only material that really protects longest against the sun is sand-lime brick with an external thermal insulation composite system (ETICS) (for example, 17.5 cm (7 inches) sand-lime brick with 16 cm (6 inches) ETICS, possibly in other versions or as a natural product). According to him, this is the only way to keep the heat out in summer, retain heat inside in winter, and also provide sound insulation. For sound insulation, I could also use Ytong on the outside and sand-lime brick on the interior walls, but this requires careful workmanship (groove cutting) to prevent cracks in the walls.
From the interior perspective, he said that sand-lime brick retains the heat from a stove or similar sources better than Ytong.
So now I’m stuck... I’ve really done some research... but I’m confused again :-(
Can anyone help? To what extent is choosing sand-lime brick maybe considered "old-fashioned or cheap"? Or is Ytong with sand-lime brick interior walls the optimal solution?
Thanks in advance... please have mercy on a building beginner ;-)
Best regards,
Markus
Well, it definitely depends on the location. For us, the outdoor temperature in the shade averaged above 24°C (75°F) for weeks. No building can stay below 24°C (75°F) without active cooling, it is physically impossible—especially since at night temperatures often remained above 20°C (68°F), so there was no chance for cooling.