ᐅ Professional painter work? Applying woodchip wallpaper and painting

Hello!
Painters are currently working in our new home. However, I have a bad feeling and think the work might not be done professionally. Maybe someone (painter, expert) can give me some feedback.
We are having fine woodchip wallpaper applied and painted.

1. Gaps are visible between the strips even from a distance. The painter says these will disappear after painting.
2. No full strips were used. For example, ceiling height is 2.50 meters (8 feet 2 inches). They used 2 meters (6 feet 7 inches) of woodchip wallpaper and the remaining piece below that.
3. On one wall, the wallpaper was applied normally on the left and right sides. About in the middle, a strip about 20 cm (8 inches) wide was placed.
4. The painted ceiling is peeling.
5. We will tile the bathroom partially up to the ceiling. The woodchip wallpaper has already been applied before tiling. Is this okay?

The painter says everything is fine. What do you think?
Thank you!

2, 3, and 4 are not acceptable. You should minimize joints as much as possible. Bonded sheets must be firmly attached. I would need to see photos of the rest.

Sounds like botched work.
Using too many small pieces is not acceptable, and if the strips come loose, that's poor workmanship. These can’t be professional painters.

A gap between sheets can sometimes be covered with paint, but I wouldn’t guarantee that this works for every gap size, and the paint also needs to be quite thick. From fast “kilometer” painters I know that inserting partial sections works too – if the paint contains many fillers instead of pigment, becomes thicker, and is applied twice, surface irregularities are often barely visible. It only looks terrible while drying.

What is already peeling off now is actually to the client’s advantage – better now than later. I would make sure that no drafts reach it, even if the air is humid.

Bathroom ceiling: When finishing a room, work is done from top to bottom, so you can definitely hang wallpaper on the ceiling already, but not paint it. The tiler will otherwise make a mess of the paint.

I would wait for the final result.

Quality painters don’t usually work like that, that’s true. For years, the painting trade has divided into those who produce quantity and those who produce quality. Actually, this process is already settled. Both approaches have their uses.

Best regards, Gabriele