What warning signs should I watch for around grading & site drainage?
Track changes in operation, sound, smell, moisture, temperature, movement, and visible condition around grading & site drainage; patterns matter more than one isolated observation.
What this means
Grading & site drainage covers pooling, slopes, erosion, window wells, and sump discharge. Relevant observations include Water pools beside foundation, Window well fills with water, Soil slopes toward the house, Sump discharge returns to foundation, Yard erosion is worsening. The correct response depends on age, design, climate, usage, installation, recent work, and the exact manufacturer instructions; these observations narrow next steps but do not prove a failed part.
Safe checks
- Compare grading & site drainage with a similar unaffected area or a documented normal cycle.
- Note whether these known observations appear: Water pools beside foundation, Window well fills with water, Soil slopes toward the house, Sump discharge returns to foundation, Yard erosion is worsening.
- Photograph and date visible changes from a safe position.
Stop and get help if
- Leave or isolate the area for fire, gas, carbon monoxide, electrical exposure, collapse, sewage, or rapidly spreading water.
- Get qualified assessment when a hidden, growing, recurring, or structural condition is suspected.
Which professional to call
Use a qualified exterior or drainage specialist when the condition exceeds safe user access or the visible checks do not explain it.
Find the relevant tradeSource and method
This answer combines HomeSOS's structured triage with safety boundaries supported by a public source. It does not replace inspection.
Health Canada: Home safetyReviewed August 12, 2026