I have a question about interior wall cracking in a townhome with a slab foundation. There are several interior walls through the middle of the unit where the sheetrock around the wall openings downstairs is buckling at the corners. The buckling is isolated to these areas, but nearly all the door frames have cracks above them. Only one door if sticking. There is also some slight bulging of the sheetrock in the stairwell.
There is also some interior cracking around the exterior walls on the rear of the home. I feel the likely cause is a large tree that is located directly beside the townhome, but the brick veneer around the exterior is not cracked where the tree is located. There is a small crack above the window on the rear that has already been repointed once and has cracked again.
All the interior walls were plumb and level vertically. The opening that is the most concern is slightly out of level by about 1/16" to 1/8" with the corners being higher than the middle when viewed with a 3 foot level horizontally.
I told the client that the tree root system could be putting pressure on the slab pushing it slightly upwards, thus causing the cracking and the buckling to the metal corner bead. I suggested the tree be cut down and a killer be put on the tree to prevent furthur movement and that I would not try to uproot the tree as that will likely cause major settling.
See pictures. Thoughts? Suggestions?