ᐅ Aerated concrete solid roof designed as a pyramid roof on an urban villa
Created on: 21 Dec 2020 09:52
A
Amel_NRW
Hello everyone,
I have been following this forum for a while, and now we are finally starting our house construction. Currently, we are planning a townhouse (external walls made of 42.5cm (17 inches) aerated concrete, interior walls of sand-lime brick) with two full floors on a plot located in the second row, about 100m (328 feet) straight line from the pedestrian zone.
Townhouses are usually built with a 22-degree roof pitch and a hipped roof. Our idea for the roof is a 35-degree pyramid roof with a solid aerated concrete roof structure and 2 to 3 roof windows. Why this choice?
Firstly, we want to keep the option open to expand the attic in about a year to add an office and another child’s room, which is why we prefer a 35-degree pitch instead of 22 degrees. Secondly, due to the dense development around us, sound insulation is an important factor, and a photovoltaic system is firmly planned. According to a friend who is an architect, when the roof type can be freely chosen, a solid roof is preferable for both soundproofing and radiation protection reasons (especially regarding the photovoltaic system).
According to Ytong, any roof shape can be constructed as a solid roof. So far, in my research, I have mostly only found solid roofs as gable roofs. Does anyone here have experience with a solid pyramid roof and could possibly share photos? And does this approach make sense as we have imagined it?
If it matters, we are still undecided about the upper floor ceiling, whether to go with a wooden beam ceiling or a concrete ceiling.
Greetings from the Ruhr area
I have been following this forum for a while, and now we are finally starting our house construction. Currently, we are planning a townhouse (external walls made of 42.5cm (17 inches) aerated concrete, interior walls of sand-lime brick) with two full floors on a plot located in the second row, about 100m (328 feet) straight line from the pedestrian zone.
Townhouses are usually built with a 22-degree roof pitch and a hipped roof. Our idea for the roof is a 35-degree pyramid roof with a solid aerated concrete roof structure and 2 to 3 roof windows. Why this choice?
Firstly, we want to keep the option open to expand the attic in about a year to add an office and another child’s room, which is why we prefer a 35-degree pitch instead of 22 degrees. Secondly, due to the dense development around us, sound insulation is an important factor, and a photovoltaic system is firmly planned. According to a friend who is an architect, when the roof type can be freely chosen, a solid roof is preferable for both soundproofing and radiation protection reasons (especially regarding the photovoltaic system).
According to Ytong, any roof shape can be constructed as a solid roof. So far, in my research, I have mostly only found solid roofs as gable roofs. Does anyone here have experience with a solid pyramid roof and could possibly share photos? And does this approach make sense as we have imagined it?
If it matters, we are still undecided about the upper floor ceiling, whether to go with a wooden beam ceiling or a concrete ceiling.
Greetings from the Ruhr area
Amel_NRW schrieb:
We need to be careful where the staircase leads upstairs, as this affects multiple floors. Is the attic really worth it? (Between a rock and a hard place, plague or cholera, ...)
Amel_NRW schrieb:
Thanks for explaining the calculation method, learned something new again. You can repay me right away:
Amel_NRW schrieb:
We visited a house with a hipped roof again today, and we like it even more than the pyramid roof. What differences do you see between them?
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
11ant schrieb:
Is the small attic really worth it? (Varus or Pyrrhus, pest or cholera, ...)
You can return the favor right away:
Where do you see the difference? Unlike a pyramid roof, where all four roof sides are the same size because they meet at a single peak, this type of roof allows for different lengths on each side. For example, the south-facing roof can be built longer than the east side. This means more potential output from solar panels due to the larger south-facing surface, while still maintaining consistent generation by using panels on the east, south, and west sides.
Overall, the room feeling under the hip roof also seemed larger to me. Unfortunately, I don’t have exact figures for the knee wall height or roof pitch, but I estimate the roof pitch to be at least 30 degrees and the knee wall height to be approximately 50–70 cm (20–28 inches) based on how it felt.
Amel_NRW schrieb:
Unlike a tent roof, not all four roof sides are the same size because they don’t meet at a single peak. I would have explained it a bit differently, but that’s also correct.
Amel_NRW schrieb:
This way, we could design the south-facing roof side longer than, for example, the east side. That means more yield from the photovoltaic system due to the larger roof area facing south, while still maintaining consistent energy production by covering the east, south, and west sides. The south and north surfaces do get larger if the east and west sides are steeper, yes. However, this often turns out to be more of a theoretical issue than a practical one.
Amel_NRW schrieb:
And overall, the sense of space felt bigger with the hip roof. That’s true. With the gable roof, the roof sides perpendicular to the ridge (also known as gables) effectively have a 90° roof pitch :-)
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Schimi179122 Dec 2020 20:51ypg schrieb:
Solid roof... I have never heard of that.
You never stop learning.
... We have a "Hebel house" with a solid roof, meaning the roof slopes are also made of Ytong – just like the rest of the house. It creates a great indoor climate and only heats up very slowly during summer.
ypg schrieb:
...
Ytong or aerated concrete... isn’t that the worst choice for sound insulation?
... We have no issues with sound insulation. I have experienced houses built with much denser materials that were no better – if not worse. However, those were older buildings (with brick as the basic material). Things might be different today. We also live in a relatively quiet area.
Schimi1791 schrieb:
We have a "Hebel house" with a solid roof, meaning the roof slopes are also made of Ytong – just like the rest of the house. It creates a great indoor climate and only heats up very slowly in summer.
We don't have any issues with sound insulation. I've experienced houses built with much denser materials where the soundproofing was worse – at least not better. However, those were older buildings (primarily brick construction). It might be different nowadays. We also live in a relatively quiet area.Our architect also mentioned the indoor climate under a solid roof, saying it should be cooler in summer and retain heating warmth longer in winter compared to a non-solid roof. Is your solid roof a gable roof or a hip roof? With or without a knee wall?Schimi179122 Dec 2020 21:41We have a gable/hip roof (so-called Dutch hip roof) with kneewalls ... 😀
Nowadays, the roof slopes are certainly insulated well enough so that heating loss would be at least the same.
Nowadays, the roof slopes are certainly insulated well enough so that heating loss would be at least the same.
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