ᐅ Definition of Airtightness for Lift-and-Slide Doors

Hello,

we have a large lift-and-slide door facing the garden, which is not completely sealed at the bottom, specifically along the track.
The leakage occurs in the area between the fixed window section and the sliding window.
If you spray water on this spot from the outside with a watering can, it leaks into the house.

Question:
Is this a defect, or are lift-and-slide doors never fully watertight?
Is there any documentation or a standard, such as a DIN norm, that specifies the required level of watertightness for such a door?

My lift-and-slide door is sealed. If even light splashing water comes into the house, then there must also be a significant draft there, right?!

Draft is not an issue.
My main concern right now is whether I can "force" the window installer to make corrections if they refuse.
Therefore, my question is whether there is a standard or something similar that could be referenced if needed.

klausdieter73 schrieb:

My main concern is whether I can "force" the window manufacturer to make corrections if they refuse.
So the question is whether there is a standard or similar guideline that can be referred to in case of doubt.

Why always put the cart before the horse?! What does the window manufacturer say? Have they already been on site? Have you demonstrated the issue to them?

Doors and windows must be resistant to driving rain. A quick online search shows that there are different classifications for this, so you should familiarize yourselves with which class applies in each situation and what it means. Also, the watering can test is certainly not a standard test, as it produces standing water, possibly even under pressure. If you insist on following standards, you should also consider that the terrace should be built according to standards as well and, to my knowledge, must include a drainage channel and a minimum height difference of 5cm (2 inches).

Please provide one photo of the entire lift-and-slide door with the drainage channel from the outside.
Also, please provide one close-up photo taken from about 1 meter (3 feet) away that clearly shows where the water is entering on the inside.