Street Creep and Winter Weather: Protecting Your Central Iowa Home

Here in Des Moines, IA, we are subject to a lot of seasonal changes. In the summer, the soil around the city becomes incredibly dry. Then, in the winter, heavy snow or freezing cold days can cause the soil to expand dramatically. Experiencing each season is part of life here, but did you know these changes could be affecting your foundation? Among other things, seasonal changes in soil density can put unwanted pressure on your home. One of the primary ways these changes directly affect your home is through a phenomenon known as “street creep.” Street creep is actually a very relevant and common issue in Des Moines, IA, and across Central Iowa. If you don’t detect street creep symptoms and fix them early, they can broaden in scope until they cause severe damage to your home.

Understanding Street Creep in Iowa's Climate

Street creep may not be a term one hears often, but it is one that we at BAM Basements and Masons are well-prepared to deal with if it does occur. This phenomenon causes foundation failure and happens over a period of many years. It usually occurs in cul-de-sacs, homes on a curved road, and driveways aligned with T-shaped intersections; these are layouts where spreading asphalt is most likely to put pressure on the driveway. The unique climate of Iowa, with its significant temperature fluctuations from scorching summers to frigid winters, makes homes in areas like Ankeny, West Des Moines, and Ames particularly susceptible to street creep. The constant freeze-thaw cycles and expansive clay soils common in our region amplify the forces at play.

What Causes Street Creep Damage?

Street creep is a common foundation problem that's caused by the thermal expansion and contraction of concrete streets and pavement surrounding a home. Like many materials, concrete expands when it's hot and contracts when it's cold. Contractors place expansion joints in sidewalks, driveways, and other exterior slabs so that temperature-induced expansion and contraction won't cause a slab to crack. These expansion joints divide a large expanse of concrete into individual slabs that can expand and contract independently. Temperature fluctuations throughout the seasons will cause these joints to widen in the colder months and narrow during hot weather.

Problems with street creep begin to arise during the cold winter months, when the widened joints become filled with materials like sand or gravel. As temperatures rise again during warmer weather, the concrete expands. But if joints are filled with sand and gravel, they can no longer absorb this movement. Instead, one slab will push against another. Once they're filled with debris, expansion joints can no longer do their job. The entire expanse of concrete expands as a single unit, causing the street to “creep.” This relentless pressure can be particularly damaging to homes in Waukee and other growing communities where new concrete is frequently laid.

The Impact of Winter Weather on Your Foundation

Street creep exerts tremendous pressure at the edge of the concrete, where a driveway meets a garage slab or a house foundation wall. Damage from street creep is a slow process – the elongation of a typical block-length concrete street is generally only a fraction of an inch each year. However, over time, the movement will add up to several inches, which will mean potentially serious damage to your foundation. In Central Iowa, the severity of winter weather plays a significant role. Heavy snow loads, repeated freezing and thawing of the ground, and the use of de-icing salts can all contribute to the degradation of concrete and the filling of expansion joints, accelerating the street creep process. This is why proactive concrete maintenance and repair is so vital for homeowners in Des Moines and surrounding areas.

Signs of Street Creep: What to Look For

It's crucial for homeowners in Iowa to be vigilant for the signs of street creep. Early detection can save you from more extensive and costly repairs down the line. Here are some common indicators:

• The expansion joint between the driveway and the garage is fully compressed.
• The foundation walls on the sides of the garage are pushed inward.
• Gaps have formed behind the foundation walls on the interior of your garage or basement.
• Cracks appearing in your garage floor or foundation walls.
• Your driveway appears to be lifting or buckling where it meets the garage.

If you observe any of these signs, especially after a particularly harsh Iowa winter, it’s time to consult with foundation repair specialists. Ignoring these warnings can lead to significant structural issues for your home.

BAM Basements and Masons: Your Central Iowa Street Creep Solution

At BAM Basements and Masons, we understand the unique challenges that Iowa's climate presents to home foundations. With over 265+ 5-star Google reviews, we are Des Moines, IA's top-rated basement waterproofing and foundation repair company. Our team of experts is highly experienced in diagnosing and repairing street creep damage, offering tailored solutions that ensure the long-term stability of your home. Whether it's installing new expansion joints, reinforcing foundation walls, or implementing advanced foundation repair techniques, we provide comprehensive services to protect your investment.

Don't let street creep compromise the safety and value of your Central Iowa home. Our solutions are designed to withstand the rigors of our local weather, providing peace of mind for homeowners in Des Moines, Ankeny, West Des Moines, Ames, Waukee, and beyond. We are committed to delivering high-quality, durable repairs that address the root cause of the problem.