Why Do Floor Gaps Happen?

In homes across Minnesota, floor gaps can form when the foundation shifts, settles, or heaves. As the soil beneath your home moves—whether due to moisture changes, freezing and thawing, or poor drainage—the foundation moves with it. This movement can cause your floors to pull away from the walls or baseboards, creating noticeable gaps. Some of the most common reasons floor gaps appear in our region include:
 

• Foundation settlement from poorly compacted fill or soil erosion

• Expansive clay soils that swell when wet and shrink when dry

• Hydrostatic pressure from water-saturated soils pushing against the foundation

• Freeze-thaw cycles causing soil and foundations to move seasonally

• Crawl space or slab movement beneath the home, affecting floor alignment

Identifying Foundation-Related Floor Gaps

If these issues appear along with drywall cracks, sticking doors, or exterior brick cracks, it’s a strong indication of a shifting foundation. Not every floor gap is a serious concern, but when paired with other signs or appearing suddenly, it’s worth having a professional inspection. Look out for:
 

• Gaps between the floor and baseboards

• Uneven flooring or sloped areas

• Separation between floors and walls or cabinetry

• Widening gaps after heavy rain or snowmelt

• Cracks in flooring materials or subfloor seams

Why Floor Gaps Matter in Minnesota Homes

In Minnesota’s unpredictable climate, foundation movement can escalate rapidly, making early detection and repair critical to protecting your home. While floor gaps might start small, they can quickly lead to:
 

• Worsening structural problems as foundation movement progresses

• Drafts, moisture, and pests entering through open gaps

• Flooring damage like cracked tiles, buckling hardwood, or loose laminate

• Lower property value and more extensive future repair costs if left unaddressed