ᐅ Window frame without slope, causing water to accumulate on the surface

Thank you for the pictures.

1. To my knowledge, there is no standard (DIN) that prohibits the frame or dripping water in general.
2. However, the "fitness for use" of a window applies. In this case, it is not met, so it is considered a defect.
   ==> You can argue based on the Building Code (section 633) or the DIN 18055 standard in general (although it does not specifically address your issue, it states that damage to the interior must be avoided, which is not the case with your window). Possibly also the RAL guideline, which specifies that water must be directed outwards (water-bearing surfaces).</li>
3. During window consultation, the window manufacturer must inform you if the frame has such "issues" under your specific conditions. If you proceed with the purchase knowing this, it becomes your responsibility.</li>
4. The profile manufacturer might even specify that this profile is not suitable for exposure to weather and may only be installed in protected locations – you will need to find that out yourself.</li>
   

I hope this helps you move forward.

Thank you for the quick response. That definitely helps me move forward. The contractor said these are modern windows, so they are just that angular. However, he has never encountered this problem before, even though he has installed these windows many times. That seems contradictory. If this is "normal," then everyone else should also have this issue. But the frame really doesn't need to have any tilt?

broegele schrieb:
But the frame doesn’t actually need to have an inclination?

I can answer that with a clear “No, it doesn’t need to.” I had already mentioned the “but.”

What kind of huge disaster is expected here if, after a heavy rain, a few drops remain in the frame?

broegele schrieb:
my new windows have frames that are completely flat, meaning they form a 90-degree angle, so rainwater tends to collect on them,

The pictures look like the latest trendy window profiles designed for the narrowest possible visible frame width. These are aimed at viewers who want to pose as architecture fashionistas—but as far as I know, they cost so much extra that you’re unlikely to choose them by accident (?). There is no specific standard like a DIN norm against such fashionable design gimmicks.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

MachsSelbst schrieb:
What kind of incredible disaster is expected if, after heavy rain, a few drops remain standing in the frame?

It is interesting that you respond to “a few drops in the frame.” However, I described water running into the room when opening the window.

11ant schrieb:
The pictures look to me like the trendy nonsense of window profiles optimized for the narrowest possible visible width. These are for picture readers who want to act like architectural fashionistas — but as far as I know, they cost so much extra that you hardly choose them by accident (?). There is no actual standard against fashion trends.

Thank you for the cultural critique. However, my question was less about architectural taste and more about proper drainage. If water runs into the room when opening the window, that has little to do with “fashion.”