ᐅ The exterior plaster has strange streaks that look like markings or lines.

Hello everyone,

I would like to ask for your opinions or experiences. Two house corners look like this (see photos).
Is this a defect...? A mistake...? Or is this normal?

Layperson’s opinion: it is a defect, it does not look nice. What it could be... I am curious to see further responses... I have no idea.

The insulation system is under the plaster, right? They did a sloppy job on the corners. The unevenness of the insulation should actually be evened out by the base coat.

Why the plasterer accepted this is a mystery to me. I was on site all day during the plastering (at least during the finish coat) and I can tell you, this kind of issue is immediately noticeable while plastering.

Also, your plaster is really dirty.

Why do I think we’ll soon hear that it’s one of the low-cost builders like Heinz von Heiden or Town & Country...

Anyway, it is a defect and should be reported in writing. It really looks bad and needs to be fixed. I wouldn’t accept it like this.

It is a prefabricated house from Bien-Zenker. I am doing the interior work myself, so unfortunately I did not notice it immediately.

We have a house from B.O.S. (formerly a subsidiary of Bien-Zenker) and it looks exactly the same. The house has been standing for 13 years, and the plaster is not affected.