How to tag sperical roofs

Hi guys,
How would you tag this building:

http://map.f4-group.com/#lat=49.1318661&lon=10.0638531&zoom=19&camera.theta=55.617&camera.phi=-0.286

Thanks in advance.

For now the inferior part cannot be mapped as it is not specified in the S3DB but it has been discussed on the German forum

Any suggestion how I could or should tag the brick part? Such buildings with regular tilted walls are not unusual.

building:facade:material=brick should do the trick