ᐅ Roller shutters allow a lot of light to pass through.

Created on: 21 Jun 2024 05:52
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Hausbau12
Hello everyone,
our roller shutters let in an extreme amount of light at the bottom left and right corners, causing the entire shutter to be illuminated. This is very disturbing, especially in the bedroom and children’s room. The pictures show the roller shutters fully closed, yet the light only comes through the bottom corners.
Someone from the company took another look (only from the outside, they did not check from inside) and said this is how it’s supposed to be. I have never experienced such light penetration in any apartment before, so I find this quite strange. Here is the response we received by email afterwards:
Depending on the type of roller shutter and the guide rail construction, more or less light can enter here. The roller shutter type and guide rail construction were requested by us as specified in the scope of work, and we offered and finally installed exactly this construction.

According to the RAL guidelines, the roller shutter guide rail must not align flush with the window drip edge; there must be at least 8 mm (0.3 inches) of space, less is not permitted, and we have achieved these 8 mm (0.3 inches) in your case.
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Of course, our service contract from the architectural firm did not state that the shutters should let in as much light as if there were no shutter. I would not understand why such constructions should even exist either.

My questions now are:
How is it with you? Do you experience this kind of brightness? How do your corners look? Would you say this is normal?
Two-wing window with closed horizontal roller shutters in a dark room.

Dark room with window blinds, little light from outside; round object in the foreground.

Night close-up of a shiny metal rail with bright light through a gap.

Close-up of a horizontal window blind with open slats; light beams through gaps.
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ypg
22 Jun 2024 23:03
Hausbau12 schrieb:

@ypg I found this end piece under "end cap glide" on Google. The part is slightly transparent, so even if everything, everything, everything went all the way down, light would still come through.
As I already said: we have it exactly like you do, without an end piece, whether transparent or anthracite.
We have a simply structured rail at the bottom. And I asked you what that is in your case. #20
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Hausbau12
22 Jun 2024 23:14
@ypg you asked what it is, and I answered you. We have a finishing strip with an end rod glider, not just a simple strip. We only have that normal strip without an end piece in the basement. Of course, you could also replace the entire strip, but that is just as difficult as replacing only this cap.
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ypg
22 Jun 2024 23:58
Hausbau12 schrieb:

you asked what it is and I answered you.

Ah, sorry, I must have misunderstood.
As I said before, we don't have that kind of fancy stuff, and it’s completely opaque and pitch dark here.
But I was also referring to the last “slat.” Isn’t it shaped a bit oddly?
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Hausbau12
23 Jun 2024 00:04
@ypg that is probably an angled end strip. Google tells me that this prevents the roller shutter from fully retracting into the roller shutter box. However, because of this, the end strip cannot fit directly into the guide track since the angle is in the way.
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ypg
23 Jun 2024 00:13
I would try removing these end rail sliders and see if the roller shutter then goes fully down.
Then, treat the glossy surface in a way that the reflected light does not refract too strongly.
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Schrauberlani
23 Jun 2024 10:50
Hausbau12 schrieb:

Hello everyone,
at the bottom left and right of our roller shutters, a lot of light comes through.


I only just noticed that there is some space between the window and the roller shutter where a fly screen could fit. You could try filling that gap at the bottom with a simple square plastic tube, which should prevent any light from coming in from below.

Alternatively, you could install a fly screen with a four-sided plastic frame as a test to see if that works.