Negative Grading
Negative Grading is a exterior defect common in Twin Cities metro homes. The single most common root cause of wet basements in the Twin Cities metro.
Negative Grading is a exterior defect common in Twin Cities metro homes. The single most common root cause of wet basements in the Twin Cities metro.
What we find.
Negative Grading as found on a Twin Cities metro inspection
As foundDocumented◂▸What causes negative grading?
Soil slopes toward the foundation, routing surface water against the wall instead of away from it.
What we check
Slope within 10 ft of the foundation, downspout extensions, window-well drainage, interior efflorescence.
Why it matters
The single most common root cause of wet basements in the Twin Cities metro.
Related: Exterior Inspection · All defects · Knowledge center
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