ᐅ What is the maximum size of a single-pane window?

Created on: 24 Sep 2019 10:05
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Golfi90
Golfi9024 Sep 2019 10:05
Hello everyone.

Yesterday afternoon, we had a conversation with our window installer, who was commissioned by the general contractor.

It concerns a gallery window with a rough opening size of 201cm (79 inches) width and 213.5cm (84 inches) height.

The window is fixed glazing.

He claims that he cannot supply the window as a single piece, but only in two parts.

He justified this by referring to a standard, stating that a window can only be deflected by 8mm (0.3 inches) if wind pressure is applied, and so on.

Is this all correct? Or does he simply not want to install such a large (and possibly heavy) window?
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nordanney
24 Sep 2019 10:39
Golfi90 schrieb:

Supposedly, he can’t deliver the window as a single unit, only divided into two parts.
Maybe he can’t. At least you can order the window online or from home improvement stores in the size you mentioned (and even larger dimensions). Whether it makes sense or the quality is good is another matter.
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Lumpi_LE
24 Sep 2019 11:24
If you look around carefully, you can also see windows measuring 5 x 5 meters (16.4 x 16.4 feet) and larger... The glass just needs to be thicker accordingly; 4 mm (0.16 inches) probably won’t work anymore in that case.
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dertill
24 Sep 2019 11:40
He is right that he cannot install your window if it is warped too much. You shouldn’t insist on it in that case.

It is probably glazing with layers of 4-12-4-12-4 mm (inches). We had a similar situation when renovating the windows next to our front door (there used to be a wall made of glass blocks). Now we have a fixed glass panel measuring 2.10 by 2.30 meters (6 ft 11 in by 7 ft 7 in), made with 6-12-6-12-6 mm (inches) glazing (12 mm (0.47 in) is the spacing between the panes).

By the way, these panels are extremely heavy, and without a crane or suitable lift, you won’t be able to get them to the upper floor – you will also need a crane during installation.
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guckuck2
24 Sep 2019 11:58
Golfi90 schrieb:

It concerns a gallery window with a rough opening dimension of 201cm (79 inches) width and 213.5cm (84 inches) height.

Those dimensions are really no big deal. They would fit into the glass unit of every second standard sliding door. Are you sure you are quoting the reason correctly?

You mention a gallery. Could it perhaps be about the fall protection, which could be made using a parapet?
Golfi9024 Sep 2019 12:26
A fall-through protection is not necessary unless someone can jump 3m (10 feet) from the gallery into the window.

The windows in question can be clearly seen in my profile picture. The upper middle ones!