Garage Slab Failure | Home Inspections Everett Bellevue Seattle
My assumption is that this garage slab failure is due to a combination of improper compaction at backfill and moisture entering the ground an running beneath the slab.
The driveway slopes to the garage slab and the surface water disappears from there. Homes built in this era has no footing or full height foundation wall beneath the opening of the garage door. The driveway drainage is going straight to the area beneath the garage slab. The drainage problem,combined with improper compaction, has resulted in a garage slab failure. It is not known what is supporting the slab at this time. There could be a void between the garage slab and sub-grade.
The solution this garage slab failure is to correct the driveway drainage. This slab is most likely beyond repair by slab-jacking and should be removed and replaced.
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