Good evening,
when measuring the windows, we found that a frame extension is necessary because the outer opening is significantly smaller than the inner opening of the window.
Now, the windows are of course supposed to have an external roller shutter!
The following question came up: Is the guide rail of the external roller shutter included in the frame extension? Or will the guide rail later disappear behind the smaller outer opening in the masonry? These are my concerns!
Can anyone with experience help me here?
Here is an example:
Outer window opening (width): 850 mm (33 inches)
Inner window opening (width): 1000 mm (39 inches)
Left margin from inner to outer opening: 70 mm (28 inches)
Right margin from inner to outer opening: 80 mm (31 inches)
With a frame thickness (system Iglo 5 is 74 mm, but here 70 mm (3 inches) for easier calculation), if 2 cm (0.8 inches) are supposed to protrude into the outer opening on both left and right sides (visible outer frame), I would have to add 100 mm (4 inches, 50 mm (2 inches) on each side) to the dimension of the outer opening. So the window rests with 5 cm (2 inches) on the left and right. Now the frame extension is added to fill the missing area so that the window can be installed properly. That is 2 cm (0.8 inches) on the left (7 cm (2.8 inches) - 5 cm (2 inches)) and 30 mm (1.2 inches) on the right (8 cm (3 inches) - 5 cm (2 inches)). 1 cm (0.4 inch) on each side for mounting material is left out here for simplicity.
How does the external roller shutter and its guide rails behave in relation to the frame extensions?
In theory, the guide rails should also become wider by the width of the frame extension so that the rails do not disappear behind the smaller outer opening.
Please help!
Best regards and thanks in advance!
when measuring the windows, we found that a frame extension is necessary because the outer opening is significantly smaller than the inner opening of the window.
Now, the windows are of course supposed to have an external roller shutter!
The following question came up: Is the guide rail of the external roller shutter included in the frame extension? Or will the guide rail later disappear behind the smaller outer opening in the masonry? These are my concerns!
Can anyone with experience help me here?
Here is an example:
Outer window opening (width): 850 mm (33 inches)
Inner window opening (width): 1000 mm (39 inches)
Left margin from inner to outer opening: 70 mm (28 inches)
Right margin from inner to outer opening: 80 mm (31 inches)
With a frame thickness (system Iglo 5 is 74 mm, but here 70 mm (3 inches) for easier calculation), if 2 cm (0.8 inches) are supposed to protrude into the outer opening on both left and right sides (visible outer frame), I would have to add 100 mm (4 inches, 50 mm (2 inches) on each side) to the dimension of the outer opening. So the window rests with 5 cm (2 inches) on the left and right. Now the frame extension is added to fill the missing area so that the window can be installed properly. That is 2 cm (0.8 inches) on the left (7 cm (2.8 inches) - 5 cm (2 inches)) and 30 mm (1.2 inches) on the right (8 cm (3 inches) - 5 cm (2 inches)). 1 cm (0.4 inch) on each side for mounting material is left out here for simplicity.
How does the external roller shutter and its guide rails behave in relation to the frame extensions?
In theory, the guide rails should also become wider by the width of the frame extension so that the rails do not disappear behind the smaller outer opening.
Please help!
Best regards and thanks in advance!
Bauexperte schrieb:
I was just wondering the same thing .... ?!?
Regards, BauexperteWhat exactly are you referring to? The unusual window opening size? Or the frame extension?
I can’t tell you what was intended here. The house dates back to 1930.
But I find it hard to believe I’m the only one facing this problem.
The current windows have frames with widths of up to about 8cm (3 inches), and the differences in width of 1–2cm (0.4–0.8 inches) were then covered up with plaster!
Best regards
B
Bauexperte2 Aug 2016 10:49Extexo schrieb:
What exactly does your statement refer to? The unusual size of the window opening? Or the window frame extension? To the offset in the window.
Extexo schrieb:
I can’t tell you what they were thinking. The house dates back to 1930. That just shows how valuable information is.
If you are making changes to the façade, a building permit (planning permission) is required; have you applied for one?
Does the façade, or its current window arrangement and shape, need to be preserved?
Have the windows already been ordered?
Regards, Bauexperte
No, the windows have not been ordered yet; I want to clear that up for you in advance. The facade will remain unchanged. I’m not sure where you got that idea from. Also, no building permit / planning permission is required here to replace the windows. Only a change in the facade color or insulation would require one. Since the facade will be renovated over the next few years, that will become a relevant issue then. The current windows have no special features—no muntins or similar. There is no historic preservation status.
To get back to the topic, do you have an answer to my original question?
“How do the guide rails of the external roller shutter behave when the window frame is widened?”
To get back to the topic, do you have an answer to my original question?
“How do the guide rails of the external roller shutter behave when the window frame is widened?”
Hello Extexo,
Your windows have an internal rebate. This is quite common in existing buildings. It was designed to provide structural protection for the exterior joint between the wall and the window. This also helps with resistance to driving rain. By the way, this feature is still used today, although the rebate is now made from insulation material as part of the external wall insulation system (EWI) and is installed afterward.
The guide rails do not get wider. Instead, they are recessed. Ideally, so that about 1.5 cm (0.6 inches) still protrudes. The exact measurement is a matter of preference. You should also let some of the frame protrude, so the size of the frame extensions almost calculates itself. You can run the roller shutter box across the entire width of the element or notch out the extensions and have part of the shutter box run past a shorter section. This depends on your specific connection situation.
Please remember to specify how far the guide is recessed when ordering the cassette roller shutter, so that the shutter curtain can be cut accordingly.
Regards, redtatoo
Your windows have an internal rebate. This is quite common in existing buildings. It was designed to provide structural protection for the exterior joint between the wall and the window. This also helps with resistance to driving rain. By the way, this feature is still used today, although the rebate is now made from insulation material as part of the external wall insulation system (EWI) and is installed afterward.
The guide rails do not get wider. Instead, they are recessed. Ideally, so that about 1.5 cm (0.6 inches) still protrudes. The exact measurement is a matter of preference. You should also let some of the frame protrude, so the size of the frame extensions almost calculates itself. You can run the roller shutter box across the entire width of the element or notch out the extensions and have part of the shutter box run past a shorter section. This depends on your specific connection situation.
Please remember to specify how far the guide is recessed when ordering the cassette roller shutter, so that the shutter curtain can be cut accordingly.
Regards, redtatoo
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