ᐅ Light streaks on fresh interior plaster – potential future cracks?

Good evening everyone!

Our interior plaster has been drying for about 2 weeks, and relatively soon after that, these light lines appeared. (See photos) Diagonally at all corners and around all windows, but also on walls without windows, where they are more horizontal. So basically, every plastered wall now has these lines. At the moment, they are only lines, not cracks. I assume these might develop into cracks eventually, or is that not necessarily the case? Could this be caused by missing reinforcing mesh angles?

Have a good evening everyone, and thank you for your answers!

I suppose this is normal with horizontal lines. The wall beneath the plaster likely has joints, and the plaster dries faster there, making it appear lighter in color.

Yes, that is imaginable with the horizontal lines. But not with the diagonal ones. They are causing me concern…

That looks quite strange; we've never seen anything like that before (we have plastered several rooms ourselves). What type of plaster is that? How old is the house?

Winniefred schrieb:

That looks unusual, we’ve never seen anything like that before (we have plastered several rooms ourselves). What kind of plaster is that? How old is the house?

Hello Winniefred!
The house has been under construction since August 2021. I’m not sure what type of plaster this is. The plaster base consists of shuttering blocks filled with concrete. In case that is relevant…

To be honest, I wouldn’t worry about that. Even with technically sound construction, a large house will move by micrometers constantly, depending on the location, ground, and conditions. The plaster is the first to show these movements. However, this is far from situations that are structurally or technically significant.