ᐅ Joints Between Two Semi-Detached Houses – Properly Executed?

Created on: 15 May 2021 09:58
H
HausMatt
H
HausMatt
15 May 2021 09:58
Hello home builders,

I have two questions regarding the joints between semi-detached houses.
The two semi-detached units are staggered, meaning the pink and the white walls in the pictures are perpendicular to each other.

1) Flexible joint at plaster profile
Is a flexible joint required between the plaster profile and the white wall (see the following image)?

Close-up of a two-tone painted exterior wall with a vertical joint, gray on the left, peach on the right


2) Existing opening
Above the black sealant, there is still an opening about a thumb’s width, through which you can reach into the gap between the two semi-detached houses.
Is it absolutely necessary to seal this opening?

Although the opening is not visible in the picture, I have included it to illustrate the situation.

Close-up of cracking in the wall at the joint between building components, crumbling plaster visible.


Thank you in advance for your assessments.