Home emergency playbook
Sudden foundation crack appears
Conservative first steps for homeowners before cleanup, repair, or contractor dispatch. When safety is uncertain, leave and call first.
Immediate steps
- Photograph the crack with a ruler or coin, then mark both ends lightly with pencil and date it.
- Check nearby doors, windows, floors, and drywall for new sticking, sloping, popping, or stair-step cracks.
- Look outside for pooling water, failed downspouts, soil washout, or new gaps along the foundation.
- Call a foundation contractor or structural engineer today if the crack is widening, leaking, displaced, or near utilities.
Do not do this
- Do not inject epoxy, hydraulic cement, or foam before the movement source is evaluated.
- Do not excavate along the wall during active movement or saturated soil conditions.
- Do not load heavy storage, aquariums, or equipment against the cracked wall.
Who to call
- Call 911 if anyone is injured, trapped, in medical distress, or if fire, shock, collapse, or active crime is present.
- Call the utility emergency line before private repair when gas, electric service, public water, sewer main, or buried lines may be involved.
- Call a foundation contractor or structural engineer for movement, cracks, settlement, drainage, or stabilization planning.
Damage mitigation
- Extend downspouts and move surface water away from the foundation immediately.
- Move storage off the floor near the crack if water is entering.
- Keep a dated photo log so the pro can see whether width or displacement changes.
Prevention
- Maintain consistent drainage with clean gutters, extended downspouts, and soil sloped away from walls.
- Avoid planting water-hungry trees close to shallow foundations.
- Repair plumbing leaks under slabs or near footings before soil washes out.
Typical cost band
Usually moderate for inspection and temporary securing; high when structural repair, drainage, or rebuild is needed.
Insurance note
Foundation movement is often limited unless caused by a covered sudden event; dated photos and engineer findings help distinguish new damage from settlement.
Related ProFix resources
Foundation Repair Contractor emergency guideTrade-specific dispatch, utility-first, and after-hours cost guidance.Troubleshooting encyclopediaSymptoms, maintenance intervals, contracts, and warranty norms.National FAQHiring, licensing, scams, permits, and DIY boundaries.Cost calculatorPlan the permanent repair after the emergency is controlled.