Hello,
During the shell construction, wall openings of 282cm (111 inches) in height were made for the floor-to-ceiling windows. Originally, 250cm (98 inches) high windows were agreed upon.
After deducting 10cm (4 inches) for the floor construction and 250cm (98 inches) for the window height, 22cm (9 inches) remained for the external venetian blind box.
Now it seems that roller shutter dimensions were planned here. There is no external venetian blind with this curtain height that has a box smaller than 30cm (12 inches).
That means the windows would have to be reduced to 241cm (95 inches), which I would really dislike.
Does anyone know of a system manufacturer that designs much smaller boxes? The plan was for the C80 slat with beading. Without beading, it might fit smaller, but after inspection, that is not an option. It is too unstable, and the supplier also advises against it.
One option mentioned to me would be to use façade boxes that disappear within the external thermal insulation composite system (ETICS / EIFS). However, that would likely affect the house’s thermal performance and require a new calculation by the energy consultant.
Does anyone here know of a solution for special external venetian blind boxes that have a particularly low installation height?
During the shell construction, wall openings of 282cm (111 inches) in height were made for the floor-to-ceiling windows. Originally, 250cm (98 inches) high windows were agreed upon.
After deducting 10cm (4 inches) for the floor construction and 250cm (98 inches) for the window height, 22cm (9 inches) remained for the external venetian blind box.
Now it seems that roller shutter dimensions were planned here. There is no external venetian blind with this curtain height that has a box smaller than 30cm (12 inches).
That means the windows would have to be reduced to 241cm (95 inches), which I would really dislike.
Does anyone know of a system manufacturer that designs much smaller boxes? The plan was for the C80 slat with beading. Without beading, it might fit smaller, but after inspection, that is not an option. It is too unstable, and the supplier also advises against it.
One option mentioned to me would be to use façade boxes that disappear within the external thermal insulation composite system (ETICS / EIFS). However, that would likely affect the house’s thermal performance and require a new calculation by the energy consultant.
Does anyone here know of a solution for special external venetian blind boxes that have a particularly low installation height?
Kati2022 schrieb:
At a height of 250cm (98 inches), you need/should install aluminum windows. Anything else will cause problems in the long term. Yes, that really seemed like a challenge. But the window supplier appears to consider it no problem since the sash is only 1 meter (39 inches) wide.
Additionally, he classifies the windows as balcony doors but said that apart from stronger fittings, there is no difference from a window. He only insisted on bonding the glass panes to the frame.
Kati2022 schrieb:
The boxes (shutter housings) are all 30cm (12 inches). The problem is that at a height of 250cm (98 inches), the "pack" of the slats also requires a lot of space inside the box. If you even find boxes that are 25cm (10 inches) high somewhere, your slats will not fit inside and will be visible when raised. Personally, I would find that unfortunate... I would find that unfortunate too, and your statement supports the impression that it basically can’t be any narrower.
Kati2022 schrieb:
What clear ceiling height will you have? 275cm (108 inches) from top of finished floor was planned.
Kati2022 schrieb:
10cm (4 inches) floor structure? That little? What does your floor build-up look like? What insulation do you have? Our floor structure is 15cm (6 inches) thick (1.5cm tile, 5cm screed, 2.5cm fixing board, 6cm insulation) even though we also have 12cm (5 inches) of XPS insulation under the floor slab... The basement is built on existing construction; the 12cm (5 inches) insulation is somehow not considered there, for whatever reason. The reference level was set above it.
I think I will have to swallow this bitter pill and reduce the window height. It just feels a bit awkward because tall windows were really important to me, and that’s why I accepted the narrower width. (Yes, they are not really small now…)
Best regards
11ant schrieb:
Am I mistaken, or does it seem like your house is being designed very "on the fly"? Well, as a construction layperson, you look at drawings with measurements and think that all the important points have been discussed, and the rest will be figured out during execution.
I believe you can’t expect a non-expert to know exactly how high roller shutter boxes (or external blinds) should be for a given window height.
Over time, you learn more and start to question things more critically. Whether the initial planning was not very good… I don’t know, I guess it wasn’t, since there have already been several adjustments, but I can’t really judge that.
The roller shutters were planned for the ground floor from the beginning, so it wasn’t a last-minute change on our part.
hanse987 schrieb:
I also think a 10cm (4 inch) floor structure is quite thin. You should also discuss the transition between the floor and the window. Floor-to-ceiling windows don’t necessarily mean a threshold-free design (which many people prefer). Fortunately, I found out relatively early (by asking) that floor-to-ceiling does not automatically mean a flush threshold. The ones that open outward are designed with a low threshold. But thanks for the tip.
JaiBee07 schrieb:
I think I will have to bite the bullet and reduce the window height. It just feels a bit off since tall windows have always been really important to me, and that’s why I was okay with the narrower width. (Yes, they aren’t actually that small..) I understand that too. High ceilings and tall windows were important to me as well. We have a clear height of 270cm (8 ft 10 in) and windows that are 240cm (7 ft 10 in) tall, plus 30cm (12 in) deep external Venetian blind boxes. The builder installed a flush lintel at floor level, and the boxes (Beck and Heun) will be mounted directly on top of the windows.
Sounds all good in theory. Unfortunately, we have a huge problem with the window supplier, as the delivery dates keep being postponed...
JaiBee07 schrieb:
Well, as a construction layperson, when you see drawings with measurements, you might think you’ve discussed all the important points and that the rest will be handled correctly during implementation.
I believe you can’t expect a non-construction professional to know exactly how high the cassette boxes for external blinds (also called venetian blinds or roller shutter boxes) should be, depending on the window height.
Over time, you learn more and start questioning things more critically. Whether the initial planning was good or not… I’m not sure; I think it was, since there have been some adjustments, but I can’t really judge that. As a construction layperson, it’s wise to discuss your project as a whole with many people in a forum who can make sense of the tangle of drawings and measurements, instead of opening dozens of separate threads (each dealing with only one tiny detail). It’s best to hire a planner for the entire project. On the other hand, if you only start educating yourself when each trade comes up in turn and get explained the fundamental differences between options A, B, and C by the specialist vendor, you’ll end up with a lot of gray hairs and endless surprises (which is a bug, not a feature).
JaiBee07 schrieb:
The external blinds were planned for the ground floor from the very beginning, so it wasn’t a last-minute change on our part. In the end, it hardly makes a difference whether the issue lies in the planning itself or in understanding why things were planned that way after the fact.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/