Minor cracks in cinder block foundations the cracks in the images above are very ordinary and nothing to worry about except for the fact that the foundation is leaking.
How to fix hairline cracks in concrete block walls.
Like bulging walls horizontal cracks are typically caused by hydrostatic pressure and even if the wall isn t bulging it s time to call in the pros.
Hairline foundation cracks are by far the most common cracks encountered when inspecting foundation walls.
Stabilizing a foundation with structural.
Smooth the epoxy out along the edges of the crack to overlap the solid concrete on the sides.
Use of plastic sheeting to cover the surface between the final finishing operations.
Use of fog nozzles to saturate the air above the surface.
Begin at one end of the crack and force the epoxy into the v shaped channel along the crack.
Continue working along the entire length of the crack.
Hairline cracking within concrete block walls is the result of internal stresses.