Hello!
First time posting a question here on the forum, but I've read a lot during the house construction.
I'm in the process of furnishing an upper floor in a Smålandsvillan house (Markaryd) and at the stairs, I was thinking of joining the gypsum wall on the ground floor to the upper floor to get a smooth, continuous wall. So, studded gypsum wall on the ground floor - joist - studded gypsum wall on top. Is there any risk in this? I saw my neighbor had a divider on the joist, and I now realize that it might move too much and crack even if I use paper tape and plaster.
If you place the boards lengthwise, with the floor joist joint centered under the board, you likely won't get any cracking. That's what I've done with our staircase with a framed wall above and below, and a 20 cm concrete floor joist in between.
If you place a gypsum joint near (about 10-15 cm) the floor joist joint and spackle, it will definitely crack.
It's not really clear from the pictures, but it looks like you'll have to redo a bit with the boards if you weren't planning on another layer on top.
Yes, exactly, the gypsum joint goes right where the studs end, and I've only planned to put one layer of gypsum.
Good tip to offset the joint, it should be enough to remove the horizontal strip of gypsum and cut the upper gypsum boards at the bottom edge to move the joint upwards.
The question is just how I deal with the lower gypsum boards that are already spackled and painted. Should I cut these off, or is there another way to reinforce the joint besides using a paper strip?
No, paper tape is the strongest. The other option would be to, for instance, have a steel plate behind that bridges the joint, but then you would still have to remove gypsum on the lower part. Cut them a bit lower, chamfer, fill with paper tape and spackle the transition as far as you can to make it look really nice. There are no shortcuts to the perfect result...
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