When installing doors, there are always situations in which the question arises: is this OK or is there a defect? Very often, for example, any air between the wall and the panelling of the door frame becomes a topic of discussion.
In principle, a certain tolerance is unavoidable in the construction industry and must therefore be accepted. If the frame is plumb and the wall is crooked within the permitted tolerance, the door supplier bears no responsibility for the joint. Only if the wall is crooked or out of plumb beyond the tolerances of the standard must concerns be raised before the door is installed. The tolerances in the construction industry are regulated by DIN 18202 (available for a fee from Beuth-Verlag, www.beuth.de).
In general, a wall may be 8 mm out of plumb up to a height of 3 metres. For standard door heights, a gap of max. 7 mm between the wall and cladding is considered a "generally recognised rule of technology" in specialist circles.
In the picture shown above, the gap is still within the tolerances. This means that there is no obligation to close the gap. If this is desired, it is an additional service.
Further questions from the field can be found in our article in the BM-Bau- und Möbelschreiner, which is available in the download area (Frequently asked questions from the field) or can be found on the BM homepage www.bm-online.de/wissen/bauelemente/haeufige-fragen-aus-der-praxis/