Direct answer
Document the first location, trigger, date, operating state and one unaffected comparison before cleaning or changing anything. That preserves the evidence needed to test Foundation-edge and below-grade entry later.
Why this question matters for Foundation-edge and below-grade entry
How repeated exterior loading can appear at wall, slab, joint or service penetrations after a lag. In the wider path, the observed clue is ponding, splashback, overflowing drainage or dampness near the foundation after rain A good answer stays tied to the actual sequence instead of converting a familiar pattern into a diagnosis.
What to compare
Include gutter, downspout, roof edge, patio, driveway, grade or foundation perimeter, nearby systems, recent work and the places where the symptom is absent. The main lookalikes remain blocked gutter, short discharge, adverse grade, surface drain failure, saturated soil and concealed supply leakage.
A useful evidence record
Write down the exact location, date and time, weather, equipment or water-use state, recent changes and one unaffected reference. Preserve photos before wiping, opening, repainting, tightening or resetting anything. State uncertainty directly.
How the answer changes the next step
If the result strengthens one pathway and weakens another, continue to the matching safe-check or scope guide. If both explanations remain plausible, repeat under controlled conditions or prepare a professional handoff rather than choosing a repair by guesswork.
Safety boundary
Avoid ladders, roofs, flooded electrical areas, unstable excavations and changes that direct water onto neighboring property. Significant foundation movement needs qualified review. HouseSymptoms provides information and documentation structure; it does not certify a diagnosis or authorize regulated work.
