Roof terrace slope planning correction on living space

Hello everyone,

we have extended and had a rooftop terrace built on our living room. Unfortunately, something went completely wrong because the slope falls from the center towards the left and right, and now water is standing against the building... Now the construction company wants to correct it for us but according to our ideas... because obviously they can’t do it any better... We now only have the option to make a 2% slope away from the house side and then there is still a 2% slope from the outside inward to the middle because the drains are on the left and right there. But now, in the middle, the water coming from the house side would basically meet the water from the outside, which means you would need a slope again to the left and right towards the drain... Is there anyone here who knows about this and to whom we could possibly send our photos and drawings?

This is really complicated and we just need someone who understands this. Also, the question arises what covering we can put on this membrane.

We are grateful for any help.
Best regards, Michael

Hi,

I didn't quite understand quickly why the construction company can't make the repairs, but I'm happy to look into the matter if you send me everything.

My email address should be visible in my profile, otherwise just let me know briefly so I don't have it permanently online here.