Concrete Crack Repair

Before & After

May 01, 2019 | Before & After Concrete Driveway Joint Sealant Adds Protection Against Future Damage Our silicone-based sealant, NexusPro, looks great, and works better than traditional, off-the-shelf caulking to protect your concrete from the elements.

April 17, 2019 | Before & After Concrete Expansion Joint Prevents Driveway Cracking and Structural Damage Concrete driveways can crack and heave over time, or worse -cause structural damage to your home. Learn more about our solution to prevent this damage.

March 01, 2019 | Before & After Long Narrow Driveway Repaired with PolyLevel Our crews utilized PolyLevel polyurethane foam and NexusPro concrete joint sealant to lift, level and protect this long, narrow concrete driveway.

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Frequently Asked Questions

• What can happen if I choose not to repair cracked concrete?

  Cracked and uneven concrete that remains unrepaired will only get worse over time. In the short term, sunken or heaved concrete slabs present tripping hazards that you may be liable for as a homeowner. In the long term, without repair and proper sealing, the concrete will continue to crack and crumble, eventually requiring replacement. Properly maintaining your concrete by repairing and sealing cracks will extend the life of your concrete for years to come.

• What do you use to repair foundation cracks?

  When it comes to foundation crack repair, there are several factors we consider before proposing a solution, such as the location and size of the foundation cracks. At Thrasher, we're experts in both foundation repair and concrete repair and maintenance. So, when we visit your home for the first time, you can expect a thorough inspection and a thorough explanation of the foundation crack repair solution we propose and why.

• What makes NexusPro(TM) different from other materials?

  NexusPro is a silicone-based sealant for joints and cracks specially engineered to provide long-lasting flexibility and to stand up to harsh weather conditions. Unlike traditional polyurethane sealants, NexusPro resists UV rays, which means it won't crack, bubble or dry. Plus, the drying time is a fraction of that needed for other urethane-based caulking products.

• What's the process for cement crack repair?

  If the cement is sinking or unlevel, we use PolyLevel(R) polyurethane foam to lift and level the concrete. Then, your cracked concrete and control joints are filled and sealed using NexusPro joint sealant. When we install NexusPro, we prepare and clean the concrete cracks, insert the product and then finish it off with native sand to give the whole surface a clean, finished look. Finally, the whole surface is protected from the elements with a coat of SealantPro(TM), which permanently bonds to your concrete.

• What causes a horizontal foundation crack?

  Foundation wall cracks and the impending structural damage is caused by the soil surrounding your home. When the soil absorbs water during wet, rainy seasons, it expands. Conversely, the soil will shrink during dry seasons and droughts. This pattern of expansion and contraction puts enormous pressure on the foundation walls, and can cause the foundation to crack, heave and shift. Poured basement walls typically fail from the top corners inward, resulting in longer diagonal cracks that emanate from the corners of the foundation wall. Block foundation walls most often fail horizontally in the middle, bowing in as the mortar joints break. The evidence of a failing foundation block wall, then, will usually consist of horizontal foundation wall cracks midway up a basement wall. You may also see stairstep cracks as the joints fail around concrete blocks at different levels. If you do see foundation wall cracks of this type, don't panic -- most foundations can be stabilized and even lifted back to their original position using specialized equipment. This is often less expensive and far less disruptive than total foundation repair.

• What causes a vertical foundation crack?

  Concrete can crack over time, often early on in its lifespan as it cures and shrinks. So, if you find a short, often vertical, hairline crack in your foundation wall -- especially if it occurs near the seam where the forms were joined for the initial foundation pour -- it may be nothing to worry about. However, foundation wall cracks can also be a sign of structural damage caused by the expansion and contraction of the soil surrounding your home. The pressure from expanding soils can cause your foundation to crack, heave and shift. Foundation cracks that are caused by settlement are very serious and will only get worse over time as the home continues to move.

• What if my cracked concrete needs to be leveled, too?

  When we visit your home for the first time, we'll perform a thorough inspection and you'll receive a thorough explanation of the concrete repair solution we propose and why. If the concrete is sinking or unlevel, we use PolyLevel polyurethane foam to lift and level the concrete. Then, your cracked concrete and control joints are filled and sealed using NexusPro joint sealant. Finally, the whole surface is protected from the elements with a coat of SealantPro, which permanently bonds to your concrete.