7 Common Drainage Mistakes That Can Lead to Concrete Settlement

Many homeowners think concrete settles simply because it gets old.

In reality, one of the biggest contributors to concrete settlement is changing soil moisture.

Water constantly affects the soil beneath driveways, sidewalks, patios, and other concrete surfaces. Too much water in one area—or not enough in another—can gradually change how the supporting soil behaves over time.

Fortunately, many drainage problems are easy to identify once you know what to look for. For more background on why slabs sink in the first place, see Why Concrete Sinks in Spokane.

1. Downspouts That Empty Next to Concrete

One of the most common drainage problems occurs when roof downspouts discharge water directly beside a driveway, sidewalk, or patio.

During Spokane's rainy seasons and spring snowmelt, large amounts of water can repeatedly soak the soil beside concrete.

Homeowners should periodically observe where downspouts discharge and make sure water is directed away from the home's foundation and surrounding concrete whenever practical. Our guide on Why Water Is Pooling on Your Driveway explores this in more depth.

2. Clogged Gutters

Gutters filled with leaves or debris may overflow during storms.

Instead of directing water into the downspouts, overflowing gutters allow water to fall directly beside concrete surfaces.

Routine gutter cleaning is one of the simplest ways to support proper drainage.

3. Poor Yard Grading

Water should generally move away from the home rather than collecting near concrete.

Low spots in the yard can allow water to remain in one area for extended periods.

Walk your property after a heavy rain and note where water naturally collects.

4. Sprinklers Hitting the Driveway

Sprinklers should water landscaping—not concrete.

When sprinkler heads repeatedly spray sidewalks, driveways, or patios, they may contribute to unnecessary moisture around the supporting soil.

Each spring, inspect your irrigation system and adjust heads as needed. The Spring Concrete Inspection Checklist is a helpful place to start.

5. Ignoring Standing Water

A puddle that wasn't there last year deserves attention.

Standing water doesn't always indicate settlement, but changes in drainage may be one of the earliest signs that the supporting soil has changed.

Photograph recurring puddles after storms and compare them over time.

6. Soil Erosion

Heavy rain or concentrated runoff can slowly wash soil away from the edges of concrete.

Watch for:

• Exposed aggregate
• Washed-out mulch
• Small depressions
• Soil pulling away from sidewalks
• Voids developing beside slabs

Addressing erosion early may help reduce future problems. For additional prevention strategies, read 10 Ways Spokane Homeowners Can Help Prevent Concrete Settlement.

7. Waiting Too Long to Inspect

Many drainage problems develop gradually.

Spokane homeowners should walk their property each spring and fall to inspect:

• Driveways
• Sidewalks
• Patios
• Garage entrances
• Drainage paths
• Downspouts
• Gutters

Routine inspections often reveal small changes before they become larger concerns.

Spokane's Weather Makes Drainage Especially Important

Throughout the year, Spokane experiences:

• Winter snow
• Spring snowmelt
• Seasonal rainfall
• Freeze-thaw cycles
• Summer irrigation

These changing conditions continually affect soil moisture. Our article on How Spokane Winters Affect Concrete explains how seasonal cycles interact with outdoor slabs.

Understanding how water moves across your property is one of the best ways to help protect outdoor concrete on your driveway, sidewalks, and patio.

Frequently Asked Questions

Is drainage really one of the biggest causes of settlement?

Changing soil moisture is one of several factors that can contribute to concrete settlement over time.

Should I inspect my property after heavy rain?

Yes. Rain provides one of the best opportunities to observe how water naturally moves around your home.

Can standing water indicate a problem?

Standing water may indicate changing drainage patterns, grading concerns, or concrete settlement and is worth monitoring.

How often should I inspect gutters and downspouts?

Many homeowners include gutter and downspout inspections as part of their regular spring and fall maintenance routine.

Final Thoughts

Water is one of the most important factors affecting outdoor concrete.

By paying attention to drainage, maintaining gutters, directing downspouts properly, and performing routine inspections, Spokane homeowners can better understand how their property changes over time and identify potential concerns before they become more significant.

If you'd like a professional evaluation of your concrete, contact Spokane Concrete Leveling to schedule a free estimate.