Painter's fleece - How to recognize it on a concrete ceiling?

After having worked in the garden almost every day for the past few months to get it finished, I finally had some time for the interior of the house again over the weekend. I noticed something that is currently puzzling me... In our upper floor, you can quite clearly see the painter's fleece around the ventilation outlet of the controlled residential ventilation system (on a drywall ceiling). However, on the ground floor (concrete ceiling), you can't see it at all — neither around the ventilation holes nor around drillings for lights.

This issue has been occupying my mind so much that I scraped off some paint under a lamp and reached the concrete ceiling, and it does not look like anything was integrated there. At the same time, as a layman, I don't want to accuse the painter (who says he incorporated a painter's fleece) of having forgotten something here.

I have always assumed that at least when breaking the paint layer, you would see it. Is it really the case that the painter's fleece essentially forms a unit with the concrete ceiling and bonds so strongly that you can no longer see it? Or could it be that the painter's fleece was forgotten?

Is it really the case that the painter's fleece virtually forms a single unit with the concrete ceiling and bonds so strongly that you can no longer recognize it? Or could it be that the painter's fleece was forgotten?

Painter's fleece is wallpaper. And it does not "bond" with another surface. If you scratch, you'll quickly notice whether you are scraping off paint or wallpaper = painter's fleece. Then you'll know whether it was forgotten.

Thank you, . That's exactly how I thought it was wallpaper, even if it is embedded in the paint layer. Then I will talk to the painter again and point it out.

In our upper floor you can clearly see the painter’s fleece around the ventilation outlets of the controlled residential ventilation (on a drywall ceiling). On the ground floor (concrete ceiling) you cannot see this at all – neither around the ventilation holes nor around drill holes for lights. This issue has occupied me so much that I scraped off some paint under a lamp and reached the concrete ceiling, and it does not look as if anything was worked into it. At the same time, as a layman, I do not want to accuse the painter (who says he worked in a painter’s fleece) of having forgotten something here.

Am I right in understanding: Your painter gave you a top finish on the ceiling for the price of painter’s fleece so that you cannot tell from close up exactly what it consists of, even at transition points/edges... and you are wondering whether you should feel deceived instead of having gotten work (with more expensive material procurement)???

Do I understand correctly: Your painter finished the ceiling so perfectly at the painter's fleece price that you can’t tell what exactly it is made of even up close, not even at transition points/edges ... and you’re wondering whether you should feel deceived instead of having gotten work (more expensive in purchase) instead of material???

Well, I don’t trust the painter – to put it mildly – to have such skill to execute it that well :X The trade was quite back and forth and partly we even touched up small areas ourselves because even after the third repair no satisfactory result was achieved. On the upper floor ceiling (drywall) you can clearly see the seams of the fleece, I am also sure painter’s fleece was used there (especially since you can see it very well at the ventilation outlets). In addition, he put a few souvenirs under the fleece in the bathroom (so much for the perfect execution :), see picture). I illuminated the ground floor ceiling with a flashlight today and am quite sure that no fleece was used here. At almost all joint edges of the precast concrete ceiling hairline cracks have formed. Something like that shouldn’t have happened with fleece.