ᐅ Advantages and disadvantages of a circular window?

Created on: 18 May 2015 08:53
F
FraJeMa
Hello dear building community!

I’m very glad to have found this forum.
We are starting to build this year and are currently waiting to submit the building permit / planning permission application.

Now to my question. I would like to have a porthole window in our bathroom. It doesn’t need to be operable since we also have a balcony door (without an actual balcony) in the room for ventilation.
We are building a solid masonry house, with a knee wall of 2 meters (6.6 feet), so the porthole window would not be affected by the roof slope.

I would like to hear your concerns, suggestions, and experiences regarding a porthole window, without revealing in advance what our builder advised us.

I look forward to your replies!

Best regards,
Jenny
B
Bauexperte
18 May 2015 17:02
Hello Jenny,
FraJeMa schrieb:

Now to my question. I would like to have a porthole window in our bathroom. It does not need to be operable, since we also have a balcony door (without a balcony) in the room for ventilation.
And how do you plan to clean the window from the outside?
FraJeMa schrieb:

Now I would like to hear your concerns, suggestions, and experiences regarding a porthole window, without revealing what our builder has advised us yet.
What could be the downside, except perhaps the additional cost compared to standard windows? It always comes down to personal taste; if it fits the look of your single-family home and you like it, I would also have it installed. A skilled tiler should be able to neatly tile around the half-circle as well. 😉

Regards, Bauexperte
F
FraJeMa
19 May 2015 07:12
Thank you all for your replies.
I actually think the same. However, our house designer advised against it. Setting aside the additional costs (starting at 1,000 euros more), he also mentioned that such designs are often problematic when it comes to waterproofing. Moisture might penetrate due to the curved surface.
Therefore, I would like to ask for your experiences 🙂 to possibly help ease my husband’s concerns that this kind of issue doesn’t always have to happen.
B
Bauexperte
19 May 2015 08:49
Good morning,
FraJeMa schrieb:

However, our house designer advised against it. Leaving aside the additional costs (starting from 1,000 euros more), he also mentioned that such designs are always problematic due to waterproofing. Moisture might penetrate because of the curvature.

By that logic, every fixed window element in the attic or upper floor would be a problem, which it is not. Of course, as always and everywhere in construction, proper craftsmanship is essential; but that is all there is to it.

Drive around a bit and you will find many examples like the one attached. This round window belongs to a building project near Hennef; however, it can be opened. So far, none of our clients have reported any issues 😉

Best regards, Bauexperte

Yellow house with dark tile roof and round window in dormer
F
FraJeMa
19 May 2015 13:57
Thank you!
It is actually true that many carpenters advise against it, as it apparently can’t be sealed properly or at least there is a risk of leaks. But don’t you have a warranty for something like that?
As a layperson, I wonder how this works—how so many have it, yet it is still not recommended.