A stair step crack is a diagonal crack but since mortar is usually not as strong as concrete block or brick the crack migrates to the mortar joints as it zigzags along a path of least resistance.
Stair step cracks stucco from ceiling to floor.
Ceiling cracks that run across the ceiling to the wall and then downward on the wall.
A crack a 16th of an inch or.
A typical cause of diagonal or step cracking in a concrete block wall and some brick or other cmu walls is frost heave or settlement but as you can see in the photo below a collapsing masonry block foundation may also show diagonal cracking near wall corners.
This promotes water intrusion bugs and costly repairs.
Ceiling cracks running diagonally across ceiling.
Jagged cracks stair step cracks and 45 degree angle cracks generally signify structural movement or settling issues that are occasionally serious but usually harmless.
Step cracks showing on stucco go through to the other side of the cinder block.
To repair the crack caulk it then apply an elastomeric patch.
Vertical and horizontal cracks in drywall or plaster walls typically indicate drying and shrinkage which is normal after construction.
According to almost home stair step cracks in cinder block foundation walls usually found in unfinished basements are a result of soil settling beneath the center of the wall.