ᐅ Insulating a New Build with 36.5 cm Aerated Concrete Blocks?
Created on: 17 Jan 2014 14:00
B
bygoranHello
our new build starts on Monday.
I am considering insulating the 36.5cm (14.4 inches) aerated concrete wall right away while the scaffolding is still in place.
We are building without KfW funding but want to insulate as well as possible.
According to a U-value calculator, I need 200mm (8 inches) of insulation to avoid moisture problems. Is that correct?
Can someone provide more detailed information? Or calculate exactly how thick the insulation needs to be to avoid any issues.
A controlled mechanical ventilation system with heat recovery is also planned.
The last ceiling below the cold roof is made of 24cm (9.5 inches) concrete, and I plan to add 240mm (9.4 inches) mineral wool insulation with a thermal conductivity of 0.035 W/(m·K). Is that sufficient?
I would appreciate any information.
our new build starts on Monday.
I am considering insulating the 36.5cm (14.4 inches) aerated concrete wall right away while the scaffolding is still in place.
We are building without KfW funding but want to insulate as well as possible.
According to a U-value calculator, I need 200mm (8 inches) of insulation to avoid moisture problems. Is that correct?
Can someone provide more detailed information? Or calculate exactly how thick the insulation needs to be to avoid any issues.
A controlled mechanical ventilation system with heat recovery is also planned.
The last ceiling below the cold roof is made of 24cm (9.5 inches) concrete, and I plan to add 240mm (9.4 inches) mineral wool insulation with a thermal conductivity of 0.035 W/(m·K). Is that sufficient?
I would appreciate any information.
The new construction starts on Monday, and you are wondering now whether you need insulation.
200mm (20cm / 8 inches) – and is that continuous all around? Does your building permit / planning permission allow that?
I can’t comment on the values; as a construction layperson, it sounds very odd to me. Such details were discussed thoroughly well in advance. Only after all parameters were set (building envelope, insulation, U-values, etc.) was the building application submitted, and only then did we start construction.
200mm (20cm / 8 inches) – and is that continuous all around? Does your building permit / planning permission allow that?
I can’t comment on the values; as a construction layperson, it sounds very odd to me. Such details were discussed thoroughly well in advance. Only after all parameters were set (building envelope, insulation, U-values, etc.) was the building application submitted, and only then did we start construction.
Hi
We are also building with 36.5 cm (14.4 inches) aerated concrete blocks without additional insulation. The advantage is that you don’t have to add a soft insulation layer around the building that needs extra protection and makes it difficult to properly attach anything.
Of course, it’s possible to plan a facing wall with brick or sand-lime brick, but eventually the budget runs out. And what happens long-term between the two walls is something only insects, mice, and rats know.
With our aerated concrete blocks, we achieve KfW 70 energy efficiency, which is sufficient for us. If necessary, the bungalow can still be insulated later, but I don’t plan to do that.
We are also building with 36.5 cm (14.4 inches) aerated concrete blocks without additional insulation. The advantage is that you don’t have to add a soft insulation layer around the building that needs extra protection and makes it difficult to properly attach anything.
Of course, it’s possible to plan a facing wall with brick or sand-lime brick, but eventually the budget runs out. And what happens long-term between the two walls is something only insects, mice, and rats know.
With our aerated concrete blocks, we achieve KfW 70 energy efficiency, which is sufficient for us. If necessary, the bungalow can still be insulated later, but I don’t plan to do that.
D
DerBjoern11 Feb 2014 09:1836.5cm (14.4 inches) aerated concrete and KFW70? Let me guess, an air source heat pump with solar support?
Similar topics