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Foundation Inspection
Understand visible changes, gather useful measurements and discuss the next step for your property.
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Concrete and foundation questions
Garage Floor Cracks: What Should You Look For?
Moving a storage box or parking in a different spot can reveal a garage floor crack you have never noticed. That does not tell you when it formed. Before deciding that the house has a foundation problem, look at the concrete surface, the nearby joints, and any changes in how the garage works.
First, distinguish a crack from a planned joint
Straight grooves in a concrete floor may be intentional contraction joints. They create planned locations where shrinkage cracking can occur. An irregular line crossing a panel is a different observation. Photograph both the line and its relationship to the nearest joint rather than using the word crack for every visible division.
Concrete can crack as it changes volume, including during drying, and its support and loading conditions also matter. The National Ready Mixed Concrete Association explains these mechanisms in its cracking and joint guidance. A surface photograph cannot establish which mechanism produced a particular garage-floor condition.
Look beyond the line itself
Notice whether the edges appear level with one another or whether there is a step that catches a shoe or a rolling bin. Record visible crumbling, water entry, and changes where the slab meets the driveway or house. Keep clear of any area that appears unstable; you do not need to load it or chip away concrete to investigate.
Also describe whether the garage door has changed in operation or whether nearby walls and doorways show new concerns. These observations provide context without proving a common cause. If the garage was converted, extended, or resurfaced, mention that history because the visible floor may not tell the whole construction story.
Make a record you can compare later
Take an overall photograph from the open doorway and a closer view of the affected area. Label the location using something permanent, such as the wall next to the water heater. Note the date, recent heavy rain, and whether the surface was wet or dry. Repeat the same views if you notice a change.
Avoid hiding the condition under a coating or patch before a needed assessment. If you are already planning an epoxy finish or other resurfacing, show the installer the concern and clarify whether concrete or foundation evaluation should happen first. A new finish can improve appearance while leaving the reason for movement unresolved.
Straightforward answers
Questions we hear.
Does a garage floor crack mean the foundation needs repair?
Not by itself. The slab's construction, condition, surrounding observations, and movement history need to be considered. Pro-Tech can discuss a foundation inspection when the concerns suggest a broader review.
Should I measure the crack before calling?
You can provide photographs and describe any uneven edge or visible change without assigning a severity rating. There is no need to reach a particular measurement before reporting a concern.
You do not have to figure it out alone.
Let's take a look Tell us what you have noticed. We will help you take the next step.
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