ᐅ GU switches window supplier from Kömmerling to Aluplast

Created on: 6 Oct 2022 12:50
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Pitiglianio
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Pitiglianio
6 Oct 2022 12:50
My general contractor is changing the window manufacturer from Kömmerling to Aluplast due to delivery issues.

In my case, instead of the originally planned Kömmerling 88MD windows, I am now supposed to receive the Aluplast Ideal 8000 windows.

According to the general contractor, there will be little to no difference in price, quality, or U-values.

From my online research, I have not found any significant differences in the specifications of the two window models.

Maybe someone here can offer advice or share their experience regarding this topic?
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Klappradl
6 Oct 2022 13:52
The most noticeable difference is that Kömmerling has 3 sealing layers (central gasket), while Aluplast has 2.
11ant6 Oct 2022 21:00
Pitiglianio schrieb:

In my case, instead of the planned Kömmerling 88MD windows, I am now supposed to receive Aluplast Ideal 8000 windows.
According to the general contractor, there will be little to no change in price, quality, or U-values.

The specifications usually say "or equivalent" when a brand is mentioned anyway...
Klappradl schrieb:

The most noticeable difference: Kömmerling has three sealing layers (central gasket), while Aluplast has two.

However, I wouldn’t like to downgrade from a central gasket (MD) to a peripheral gasket (AD). As far as I remember, the Ideal 8000 is also available with a central gasket.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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Pitiglianio
7 Oct 2022 05:37
Thanks in advance.
11ant schrieb:

The specification of works usually states "or equivalent" when a brand is mentioned.
In this case, it does not.
11ant schrieb:

However, I wouldn’t want to downgrade from MD to AD. As far as I remember, the Ideal 8000 is also available in MD.
Klappradl schrieb:

The most noticeable difference: Kömmerling has 3 sealing levels (middle seal), Aluplast has 2.

According to online research, the Ideal 8000 also has this third seal as a middle seal.

As a third seal in the window frame, the continuous central rib not only improves thermal insulation values but also prevents the sash from being easily pried open.
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JaiBee07
20 Oct 2022 10:10
Exactly, the Ideal 8000 also has a central seal, providing three levels of sealing.

What I also consider positive is that I had trouble finding someone willing or able to manufacture my relatively tall windows (2.5 meters (8 feet 2 inches)) in plastic. Two window manufacturers independently recommended this frame profile for that purpose. It seems to be among the more "stable" options.