Good evening Yvonne,
I just can’t get any further and will probably ask the site manager whether it is now "ready for wallpapering" like this and if it would look different if we had chosen Q4.
This has nothing to do with the quality levels; these refer to interior plaster and drywall work.
Here is just the description of Q4 as an example:
Quality Level
Q4
Quality level Q4 includes all executions of quality level Q3 as well as an additional full-surface reworking of the surface with a suitable filler material. In connection with quality level Q4, flatness tolerances with increased requirements must be contractually agreed.
Execution:
[*]Works of quality level Q3
[*]Repeated full-surface coating and smoothing of the entire surface with a suitable filler material (layer thickness > 1 mm)
Application Examples:
[*]Smooth wall coverings and coatings with gloss, e.g. metal, vinyl or silk wallpapers
[*]Glazes or coatings up to medium gloss
[*]Filling and smoothing techniques
A surface treatment of quality level Q4, which meets high requirements, minimizes the possibility of markings on boards and/or joints. Basically, the surface is influenced by daylight or artificial lighting. Absolute shadow freedom with oblique light cannot be achieved. The lighting conditions as intended for later use must be known. Ideally, they should already be set up at the time of filling. Furthermore, the practical on-site limits of execution must be observed. Surfaces that appear absolutely even and shadow-free even under the influence of oblique light cannot be crafted by hand. In individual cases, it may be necessary, in connection with coating and adhesive work, to take further measures, e.g. multiple filling and sanding, to prepare the surface for the final coating, e.g. for glossy coatings, paints or foil wallpapers. In these individual cases, it is recommended that the final layer beyond Q3 be applied by the specialist contractor who applies the final coating.
Source: my website
.. nicely done in the shell construction - only the plastic of course does not look very homely with the plaster around it
There is nothing about it in the BB...
I see the problem rather in whether there is enough filler on the roller shutter box (unfortunately I can’t see this in the photos) and if so, how the connection to the surrounding interior plaster is to be ensured...
Write me what came out of your conversation. Until then, I keep my fingers crossed that there is a satisfying solution for you.
Rhenish regards