How Can I Tell If My Foundation Is Still Moving?
Finding a foundation crack does not always tell you what is happening right now. Some cracks are evidence of movement that happened years ago and has since stopped. Others are part of a foundation problem that is still developing.
That difference matters. We inspect homes throughout the St. Louis area that have old stair-step cracks, slightly uneven floors, or previous foundation repairs that have looked the same for years. We also see homes where cracks are widening, doors have recently started sticking, or one section of the floor is continuing to drop. When we evaluate a foundation, we are not just asking whether the house has moved. We want to know whether it is still moving.
An Old Crack and an Active Crack Are Not the Same Thing
A crack tells us that stress or movement has occurred, but it does not give us the full history by itself. A stair-step crack in brick could have formed years ago and remained nearly unchanged since then. A similar-looking crack on another home might have appeared recently and continued growing over the last several months.
That is why one of the first things we ask homeowners is when they noticed the problem and whether anything has changed. Photos from a home inspection, real estate listing, old repair estimate, or even pictures on your phone can sometimes help establish a timeline.
We become more interested when a crack is clearly getting longer or wider, a repaired crack opens again, or new cracks begin showing up in the same area. Those changes give us more reason to believe the structure may still be moving.
Take Pictures and Keep Track of Changes
If you have a crack that does not appear urgent, documenting it is one of the simplest ways to learn more about what the house is doing.
Take a clear photograph and note the date. Try to take future pictures from roughly the same angle so you can compare them. If there is a noticeable opening, you can also record its approximate width and length.
The goal is not to turn yourself into a foundation inspector. You are simply creating a record. It is much easier for us to understand a crack when a homeowner can say, “This is what it looked like six months ago,” instead of trying to remember whether it seems larger.
Monitoring can be appropriate when the rest of the home does not show signs of active movement. We have inspected homes where that was the right recommendation instead of immediately moving forward with structural repair.
Watch the Doors and Windows
Doors and windows are useful because they can show changes occurring above the foundation.
A door that has always needed a little extra push to close is different from one that suddenly stopped latching. The same is true for a window that becomes harder to open or a new gap that develops around a frame.
Foundation movement can change the shape of door and window openings as the structure above shifts. We pay more attention when those changes happen along with cracks in drywall, masonry, or the foundation itself.
Common changes worth noting include:
- A door that recently started sticking
- A latch that no longer lines up
- Windows that have become difficult to open or close
- New cracks extending from the corners of windows or doors
- Gaps developing around trim
- Multiple doors changing in the same area of the house
None of these symptoms proves that the foundation is actively settling by itself. When several appear together, though, they give us a better picture of what may be happening. Perma Jack lists sticking doors and windows, cracks around openings, and sagging floors among the warning signs we evaluate during foundation inspections.
Pay Attention to Cracks That Have Been Repaired Before
An old repair can tell us a lot.
If a drywall crack was patched years ago and has never returned, the movement that caused it may have stopped. If that same crack keeps reopening after every repair, something may still be changing underneath the finished surface.
We see the same thing with masonry and foundation cracks. A previous patch that separates, cracks again, or shifts can help establish that movement continued after the original repair.
That does not automatically tell us how serious the problem is, but it is useful evidence. When you have previous repair records or know approximately when the work was completed, share that information during the inspection.
Changes in Floor Elevation Can Tell Us More Than a Crack
Cracks are usually what get a homeowner’s attention, but floor elevations can give us a broader view of how the structure is behaving.
If one part of a house has settled, the floor above that area may slope or sit lower than other portions of the home. During an evaluation, we can look at those elevation differences along with cracks, doors, windows, and the foundation itself.
The pattern is important. A floor that is slightly uneven in an older St. Louis home does not automatically mean the house is actively settling. Older homes can carry evidence of movement that occurred decades ago. What concerns us more is a floor that appears to be changing or an elevation difference that lines up with other new symptoms in the same area.
Look at the House as a Whole
One crack rarely gives us enough information to make a good foundation recommendation.
For example, imagine we inspect a home with a stair-step crack on one exterior wall. If the crack is old, the nearby doors work normally, the floors appear stable, and the homeowner has not noticed any changes for years, monitoring may be appropriate.
Now imagine another home with a similar crack. This time the homeowner says it appeared last summer, has grown since then, the door above it recently stopped latching, and the floor in that corner feels lower. Those additional clues make the situation very different.
That is why we try to connect what we see in the foundation with what is happening throughout the rest of the home.
| What You Notice | What We Want to Know |
|---|---|
| Foundation or brick crack | Is it new, wider, longer, or displaced? |
| Repaired crack | Has it reopened or changed since repair? |
| Sticking door | Is this new or has the door always behaved that way? |
| Hard-to-open window | Are nearby cracks or gaps developing too? |
| Uneven floor | Has the slope changed or is it an older condition? |
| Drywall crack | Does it keep returning in the same location? |
| Chimney movement | Is it separating farther from the house? |
| Multiple symptoms | Are they concentrated in the same part of the structure? |
We are looking for patterns rather than treating every symptom as an independent problem.
St. Louis Soil Conditions Can Make Movement Seasonal
Foundation movement in the St. Louis area is often connected to changes in the soil around the home. Clay-rich soils can change as moisture conditions change, and foundations may respond differently during wet periods and extended dry weather.
That is one reason timing can matter. A homeowner may first notice new cracking during or after a dry Missouri summer, while another problem becomes more noticeable after prolonged rain. Drainage, grading, downspouts, vegetation, and soil conditions around the house can all become part of the evaluation.
This does not mean every seasonal crack is an active foundation problem. It means we want to understand what was happening around the home when the changes appeared. Perma Jack’s existing St. Louis guidance specifically identifies moisture-sensitive clay soils, heavy rains, drought periods, grading, and drainage as common contributors to foundation movement in our region.
How Long Should You Monitor a Foundation Crack?
There is no single monitoring period that works for every house.
If we believe a condition appears stable and does not need immediate repair, monitoring gives us a chance to see what happens through changing weather and soil conditions. The important part is having a baseline and checking for actual changes rather than simply ignoring the crack.
If the condition changes during that time, contact us again. You do not have to wait until some predetermined date if a crack suddenly widens, additional cracks appear, a door stops working properly, or another part of the house begins changing.
Monitoring should give us more information. It should not be used to put off evaluating a condition that is clearly progressing.
When We Become More Concerned About Active Movement
We take a closer look when several signs point in the same direction. That may include a combination of:
- A new crack or one that is clearly growing
- Stair-step cracking that continues through masonry
- A repaired crack that keeps reopening
- New sticking doors or windows
- Drywall cracks above doors and windows
- Increasing floor slope
- Separation between walls, ceilings, or trim
- A chimney pulling away from the house
- Several new symptoms appearing in one portion of the home
The number of cracks alone is not necessarily the deciding factor. We are more interested in change, displacement, and the pattern throughout the structure.
Does Active Movement Mean I Automatically Need Foundation Piers?
No.
Even when we determine that something is changing, the next step is figuring out why. We do not want to jump from “there is a crack” directly to “the house needs piers.”
Foundation settlement can require structural stabilization, but other problems may involve drainage, basement walls, isolated cracks, or conditions that need a different repair. We have also recommended monitoring when the available evidence did not justify structural work at that time.
The repair should follow the diagnosis, not the other way around.
What We Look for During a Foundation Inspection
When our team evaluates possible foundation movement, we look beyond the spot that first caught your attention. We want to understand how the house is behaving from the foundation up.
That may include reviewing crack patterns, floor elevations, masonry, doors and windows, basement walls, previous repairs, exterior drainage, and other changes around the property. We also want to hear what you have noticed because the history of the house can provide information that a single inspection cannot.
This is especially important with older St. Louis homes. A house may have decades of settlement history without having an active structural problem today. Our job is to separate that history from signs that something is still changing.
Not Every Foundation That Has Moved Needs Repair Today
One of the more important things we can tell a homeowner is that a foundation does not need to be perfect to be stable.
We regularly see older foundations with cracks, patches, or slight elevation differences that have been present for many years. If the condition appears stable and we are not seeing evidence of continued movement, monitoring may be more appropriate than repairing something simply because it does not look new.
On the other hand, if the house is giving us several signs that movement is continuing, addressing the cause sooner can keep the problem from progressing.
The question we keep coming back to is not simply, “Has this house moved?” and It is “Is it moving now?”
Think Your Foundation May Still Be Moving?
If you have noticed a crack getting larger, a repaired crack opening again, new sticking doors, uneven floors, or other changes around your home, our team can take a closer look.
At Perma Jack of St. Louis, we inspect foundations throughout the St. Louis area and look at the complete pattern before recommending a repair. Sometimes that leads to foundation stabilization. Sometimes another repair makes more sense. And sometimes the right recommendation is to document the condition and keep monitoring it.
If something around your home has changed and you are not sure what it means, contact us to schedule a foundation inspection. We can help determine whether you are looking at old movement, active settlement, or a condition that does not need structural repair right now.
