ᐅ Cracks in the plaster

Created on: 14 Feb 2012 10:58
J
josi
J
josi
14 Feb 2012 10:58
Hello,
I’m new here and not sure if I’m posting in the right thread. Sorry if this is the wrong place.

A brief background:
We received our prefabricated house (made of wood) last August, and since then, we’ve been busy with the interior finishing. Progress is rather slow because my husband doesn’t want help, so the two of us have to do everything ourselves, but that’s another story.

In November, we got our kitchen installed. Before that, we spent a lot of time screwing and filling joints. It looks really good.

We used Uniflott joint filler and a few days later, applied a finishing plaster (we got this from our exterior plasterer). As I said, it looks quite good.

Now, my problem:
For about two weeks, cracks have appeared in the corners of the exterior walls and at the transition to the roof slope on the exterior wall (it’s a counter-gable). There is also a large crack where the counter-gable meets the main house. (I hope you understand what I mean.) Essentially, it’s exactly at one joint where the drywall boards meet.

1. Is this normal?
2. How can it be prevented? We were thinking about sanding everything down again, injecting acrylic into the corner, and then replastering.

Is that a sensible approach, or would it not help at all?
B
Bauexperte
14 Feb 2012 11:49
Hello Josi,
josi schrieb:
is this normal?

Did you install reinforcement strips? With reinforcement strips fully embedded into the fresh filler compound, additional strength can be achieved in areas subject to higher stress.

Best regards
J
josi
14 Feb 2012 13:13
What are reinforcement strips?

Are those the grid-like adhesive tapes?

We only had those later, but we have this kind of foam inside, which was also recommended by the plasterer, so the panels can move properly.
B
Bauexperte
14 Feb 2012 20:43
Hello Josi,
josi schrieb:
Is that the grid-like adhesive tape?

Yes.
josi schrieb:
But we have some foam inside, which was also recommended by the plasterer so the panels can move.

I think that is probably the issue if the materials used were otherwise compatible.

Kind regards
J
josi
15 Feb 2012 07:34
But why does the plasterer recommend it to us then?
And in the peak of the opposing gable that connects to the main house, there is nothing inside at all, and it’s even worse there than at the corners.

Would it help if we just fill it with acrylic and then paint over it now?
Or will it happen again?