The Winnipeg foundation warning-signs checklist
| What you're seeing | What it usually means | Urgency |
|---|---|---|
| Stair-step cracks in brick or block | Differential settlement under the wall. | Soon |
| Horizontal crack in a basement wall | Lateral pressure from saturated gumbo clay. | Urgent |
| Visible bow or lean in basement wall | Wall is failing structurally. | Urgent |
| Widening vertical crack in poured concrete | Active settlement; not just shrinkage. | Soon |
| Doors / windows out of square in one area | Frame is moving with the foundation. | Soon |
| Floors sloping across multiple rooms | Differential settlement across footings. | Soon |
| Gaps between walls and ceiling, trim pulling away | Structure separating from itself. | Soon |
| Water seeping in every spring melt | Saturated gumbo at the footing, drainage failing. | Plan |
| Efflorescence (white powder) on basement walls | Recurring moisture migration through concrete. | Plan |
| Hairline vertical crack, stable for years | Shrinkage; cosmetic, seal against water. | Watch |
Outside the house
- Cracks in exterior brick or stucco, especially stair-stepping from a corner.
- Front steps or porch pulling away from the house, or sinking on one side.
- Driveway slab heaved at the garage apron, common after spring melt.
- Gaps opening around window frames from the exterior.
- Garage door no longer sitting square in its frame.
Inside the house
- Drywall cracks above doorways and at the top corners of windows.
- Doors that have started to swing on their own or catch on the latch side.
- Trim pulling away from baseboards or crown moulding.
- Floors that feel uneven across a room, or you can roll a ball one direction.
- Cracks reopening after you've patched them.
In the basement
- Horizontal cracks anywhere (these are urgent).
- Visible bow or lean in a wall (sight along it from one end).
- Water tracks down the wall after rain or spring melt.
- Efflorescence (white powdery deposits) on concrete.
- Sump pump running constantly in spring.
What to do next
If you have any urgent sign (horizontal crack, visible bow, widening crack), book a free assessment now, because these escalate fast in Winnipeg's spring. For "Soon" or "Watch" signs, document with photos (dated) and book an assessment so we have a baseline.
Related
Frequently asked
Which foundation cracks are the most serious?
Horizontal cracks, stair-step cracks across multiple courses of block, and any crack that's widening over time. These point to structural movement and should be assessed quickly.
Is a sticking door always a foundation problem?
Not always, since humidity swells doors in Winnipeg summers. But if multiple doors and windows have gone out of square at the same time, or you see cracks above doorways, the frame is moving with the foundation.
Should I worry about basement water if there are no cracks?
Yes. Water at the footing in Winnipeg gumbo means saturated clay pushing on your walls, and even without visible cracks, that's the loading event that eventually causes them.