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Cracks spreading from an unsealed concrete joint

Signs of Failing Expansion Joints: What to Watch Out For

May 30, 20252 min read

Expansion joints play a critical role in concrete health, but the effects can be serious when they start to fail. Knowing the signs of failing expansion joints helps you take early action before minor issues turn into major repairs.

At WMG Caulking, we specialize in sealing and repairing joints for residential and commercial properties in Omaha, NE, and the surrounding areas. Let’s explore the warning signs every property owner should know.

Why Expansion Joints Fail

Even well-installed joints can wear down over time due to:

  • Constant temperature changes

  • Water penetration

  • UV exposure

  • Heavy traffic and load-bearing stress

That’s why regular inspection is key. Spotting the signs of failing expansion joints early can save your entire concrete structure.

Common Signs of Failing Expansion Joints

1. Cracked or Missing Sealant

If the sealant is brittle, pulling away, or completely missing, it no longer protects the joint from:

  • Water infiltration

  • Chemical exposure

  • Dirt and plant growth

Cracked sealant is one of the first signs of failing expansion joints you’ll likely notice.

2. Weeds or Grass Growing in Joints

Vegetation growth inside joints indicates that the joint has lost its seal. This looks unsightly and allows roots to damage the surrounding concrete further.

3. Water Pooling or Seeping In

Puddles near joints or visible moisture in the seams are a red flag. Unsealed joints absorb water, which leads to base erosion and freeze-thaw damage.

4. Cracks Radiating From Joint Lines

If you notice surface cracks forming along or near expansion joints, it’s a clear sign of stress. The joint is no longer absorbing movement properly.

What to Do If You Notice These Signs

Don’t ignore the signs of failing expansion joints—they worsen with time. If you see any of these issues:

  • Avoid washing the area with high pressure

  • Remove visible debris or vegetation

  • Contact a professional to evaluate and reseal the joint

At WMG Caulking, we assess the joint’s condition and provide long-lasting repair solutions.

Protect Your Concrete with Timely Repairs

Failing joints can lead to costly damage. Recognizing the signs of failing expansion joints early helps protect your property and extend your concrete’s lifespan. Whether you need sealing, resealing, or repairs, WMG Caulking is your trusted partner in Omaha and beyond.

Signs of failing expansion joints
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Cracks, gaps, and surface wear weaken concrete, causing costly damage. You need a solution that lasts. That’s where we come in. Our expert team specializes in sealing and caulking, ensuring durable surfaces that withstand time and weather.

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