1. Vertical Cracks - This is most often caused by settlement of the structure, soil compacting, or soiling washing away under the footings.
2. Angled Cracks - These types of cracks appear when there is a major difference in the soil under the house from one location to another, heaving of the soil, and resulting footing failure.
3. Horizontal Crack - This is pressure being applied from the outside. The cause can be soil pressure against the wall, improper backfilling and surface problems such as poor down spouts that increase the amount of water pushing against the wall.
4. Shrinkage Cracks - Can appear in foundation walls as part of the curing process. This is possible by too much moisture added in the blocks when they were set.




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