Hi everyone;

i am modelling a building for take-off calculations. The model is not started by me.
i am adding rooms with vertical surfaces but there is little rounding errors in the drawing. so some walls are not detected by room.
i don't know the source but maybe the importing.

what can i do to fix this? is there room detection tolerance option or can i round off all the walls coordinates to mm level?

thank you for help and sorry for my bad English.