Why foundation cracks form, which ones leak, and how crack repair fits into a complete basement waterproofing plan.
Why cracks form
Concrete shrinks as it cures, soil settles unevenly, and freeze-thaw cycles expand existing openings each winter. Most homes develop some cracking over time.
Which cracks leak
Vertical and diagonal cracks that extend through the wall commonly leak under saturated soil conditions. Horizontal cracks may indicate pressure against the wall and deserve prompt assessment.
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