Yes, expansive soil is the primary cause of uneven floors in Denver homes. The Front Range region is characterized by expansive clay soils, which contain minerals that undergo dramatic volume changes based on moisture levels.

According to the provided content, this process affects home foundations in several ways:

• Swelling: During wet spring and monsoon seasons, the clay absorbs water and expands, which can lift sections of the foundation.
• Shrinking: During dry, arid summers, the soil contracts and shrinks, creating voids that lead to differential settlement.
• Movement Cycle: This continuous cycle of swelling and shrinking prevents the foundation from being uniformly supported, resulting in sloping, bouncy, or uneven floors.

Homeowners may notice secondary signs of this soil-driven movement, such as sticking doors and windows, stair-step cracks in exterior masonry, and gaps around window frames. Because these geological conditions are progressive, early intervention using methods like helical pier installation or polyurethane foam slab lifting is recommended to prevent further structural deterioration.

• Uneven Floors: Signs of Foundation Issues Explained