Hello everyone,
I am currently planning to add a roof extension to a multi-family building to create a nice home for myself.
Due to building regulations, part of the planned sloped roof must be constructed as a post-and-beam (mullion-transom) glass structure.
The reason is that the roof thickness in that area is only allowed to be 20cm (8 inches), which still provides enough clear ceiling height given the maximum permitted building height.
This glass roof will then transition into a glass facade, similar to a conservatory. It will be quite large, likely spanning the entire room width and about 2 meters (6.5 feet) deep.
The structure will span the entire side of the building, with all three bedrooms located underneath. Now I am wondering whether a sound-insulating, heavy triple-glazed laminated tempered glass configuration would be sufficient to adequately reduce rain noise, allowing for comfortable sleeping.
I understand that both the loudness and the sound of rain can be perceived very differently by individuals.
Perhaps there are opinions, experiences, or even actual observations on this topic.
Thank you all!
I am currently planning to add a roof extension to a multi-family building to create a nice home for myself.
Due to building regulations, part of the planned sloped roof must be constructed as a post-and-beam (mullion-transom) glass structure.
The reason is that the roof thickness in that area is only allowed to be 20cm (8 inches), which still provides enough clear ceiling height given the maximum permitted building height.
This glass roof will then transition into a glass facade, similar to a conservatory. It will be quite large, likely spanning the entire room width and about 2 meters (6.5 feet) deep.
The structure will span the entire side of the building, with all three bedrooms located underneath. Now I am wondering whether a sound-insulating, heavy triple-glazed laminated tempered glass configuration would be sufficient to adequately reduce rain noise, allowing for comfortable sleeping.
I understand that both the loudness and the sound of rain can be perceived very differently by individuals.
Perhaps there are opinions, experiences, or even actual observations on this topic.
Thank you all!
H
hanghaus202316 Nov 2023 13:34My wife loved it when the rain poured down on the roof windows. I did not.
Your architect can’t find a better solution?
Your architect can’t find a better solution?
H
hanghaus202316 Nov 2023 13:49Maybe something like this could be an alternative. I only saw it recently.
S
Simon-18916 Nov 2023 15:31hanghaus2023 schrieb:
Maybe this could be an alternative. I only saw it recently.
Polycarbonate is mainly used in industrial construction. They are practical because they are inexpensive and lightweight, but not much more than that.
They also tend to yellow relatively quickly. Although high impact resistance is often advertised, they are still quite vulnerable to hail damage.
The glass thickness will typically be between 16mm and 24mm (0.6 and 0.9 inches), depending on the classification, frame layout, and glass width.
This is similar to many glass canopies or conservatory roofs.
Maybe someone in the forum with a fully glazed terrace roof can share feedback on noise levels during rain.
Personally, I wouldn't choose this due to the challenges of shading and darkening the space for sleeping.
Winniefred16 Nov 2023 16:08Heat and too much light in summer, and noise during rain – why would anyone build something like that?
This concerns optimizing the usable living area. As I mentioned, I am subject to building regulations. The maximum height allowed in this area is 2.3 m (7.5 ft) from the top of the unfinished floor to the exterior side of the roof, so that this area does not qualify as a full story. This can be seen in the 3-D model I attached.
A full story is not permitted. At the same time, the space below this area must qualify as living space, so it needs to have a minimum clear ceiling height of over 2.0 m (6.6 ft). A standard roof with sufficient insulation cannot be achieved with a thickness of less than 30 cm (12 inches). Unless someone has a creative idea 🙂 Expensive aerogel insulation panels are another option to consider.
This way, I gain about 30 m² (320 sq ft) of living space, which at a price per square meter of approximately 9,000 euros corresponds to a property value of 270,000 euros.
Thermal insulation is not a problem; there are glass configurations that sufficiently block both heat and radiation. Darkening can be achieved with internal pleated blinds or blinds placed between the glass panes, etc.
All challenges have been solved so far, except possibly the issue of rain noise. This might not be so bad—if anyone has personal experience with this and can share. A 10-10.2 tempered - 14 - 8 - 14 - 8-8.2 tempered glass configuration provides sound insulation of about 53 dB. But this means a heavy, roughly 7 cm (2.8 inches) total glass thickness.
Unfortunately, the architect is not very creative 🙁
A full story is not permitted. At the same time, the space below this area must qualify as living space, so it needs to have a minimum clear ceiling height of over 2.0 m (6.6 ft). A standard roof with sufficient insulation cannot be achieved with a thickness of less than 30 cm (12 inches). Unless someone has a creative idea 🙂 Expensive aerogel insulation panels are another option to consider.
This way, I gain about 30 m² (320 sq ft) of living space, which at a price per square meter of approximately 9,000 euros corresponds to a property value of 270,000 euros.
Thermal insulation is not a problem; there are glass configurations that sufficiently block both heat and radiation. Darkening can be achieved with internal pleated blinds or blinds placed between the glass panes, etc.
All challenges have been solved so far, except possibly the issue of rain noise. This might not be so bad—if anyone has personal experience with this and can share. A 10-10.2 tempered - 14 - 8 - 14 - 8-8.2 tempered glass configuration provides sound insulation of about 53 dB. But this means a heavy, roughly 7 cm (2.8 inches) total glass thickness.
Unfortunately, the architect is not very creative 🙁
W
WilderSueden16 Nov 2023 18:08Forget about internal shading. In summer, it will feel like a sauna inside. Also, I doubt that the glass blocks enough radiation.
Is this only about the 2m (6.5 feet) strip? I would place the beds and a wardrobe there, so you could easily manage with less space.
Is this only about the 2m (6.5 feet) strip? I would place the beds and a wardrobe there, so you could easily manage with less space.
ecsmo_x schrieb:Here, does unfinished floor mean the intermediate floor or the screed layer?
Top of the unfinished floor to the outside of the roof
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