Are lift-and-slide doors generally less airtight?

Hi,

we are currently planning our house. We have planned a lift-and-slide door downstairs (partially covered) and now want to install another one upstairs.

Our builder does not strongly advise against it, but said he would not necessarily do it because with lift-and-slide doors you can sometimes get some water inside during severe storms. Both doors would face south, downstairs as mentioned somewhat covered, upstairs not at all.

Such storms occur here once or twice a year and certainly sometimes when we are on vacation. Since we plan to have wooden parquet everywhere, water damage would of course be very unpleasant!

I can hardly find much about leaking lift-and-slide doors either here in the forum or on the internet, which is why I still vote for the door upstairs.

What do you think? Are they really that problematic?

Best regards

ours are sealed..

and then I still have to reach 30 letters

Our house builder does not strongly advise against it, but said he wouldn’t necessarily do it because with lift-and-slide doors and severe storms you can sometimes get some water inside.

He probably doesn’t want to install them. I wouldn’t let that make me afraid, there are plenty of good systems.

Ours is tight. It also holds when the children spray on it with the garden hose.

Waterlogging can become a problem. Only waterlogging should not occur there anyway

Facade gutter in front and that's it....

Our lift-and-slide door is sealed. However, the DIN standard stipulates that measures against standing water must generally be taken in front of such doors. Installing a channel, for example, is therefore sufficient. In practice, this is often neglected.