A sunken concrete walkway is usually fixed by either raising and leveling the settled sections or removing and replacing them, depending on why they sank and what condition the concrete is in. The cause matters most, because fixing the surface without addressing the ground underneath can lead to the same problem again.
Sunken sections are more than an eyesore. They can create trip edges and send water toward your home. Here’s how the problem is usually approached.
Why Walkway Sections Sink
Concrete rests on the soil below it. When that support changes, the slab follows. Common causes include:
- soil that wasn’t compacted well before the walkway was poured,
- water washing out the base, often from downspouts or poor grading,
- erosion along the edges of the path, and
- tree roots or decayed organic material underneath.
Rainy weather in North Carolina can speed up washout, especially where water flows across or beside the walk during storms.
Sometimes the sinking happens slowly over several years, and homeowners only notice once a gap becomes a trip hazard or water starts pooling in a low spot.
Leveling or Replacement?
If the concrete is still in decent shape and has simply dropped, leveling may be an option. The idea is to restore support and bring the section back into line with the rest of the walkway. Our concrete leveling page explains when lifting a slab can make sense.
If the section is badly cracked, crumbling or broken into pieces, replacing it is often more practical. Replacement also gives a chance to correct base and drainage problems before new concrete is placed.
The right choice depends on the extent of the damage, the cause of settlement and how the walkway is used.
Don’t Skip the Drainage Fix
Raising or replacing a slab without dealing with water is like patching a roof without fixing the leak. Look at where downspouts empty, how the yard slopes and whether water pools along the walk after rain. Redirecting water away from the path can help any repair last longer.
Filling gaps along the edges with soil or mulch can also help limit future erosion under the slab.
Is It a Safety Issue?
Uneven joints between walkway sections can catch toes, canes and wheels. If the edge between two pieces has become noticeable, it is worth marking or avoiding until it can be addressed. Larger gaps, wobbling pieces or sinking near the foundation should be looked at sooner rather than later.
Because the cause isn’t always visible from the surface, an on-site evaluation is the most reliable way to choose a fix. Our concrete walkway repair and replacement work starts with understanding what is happening underneath.
If part of your Burlington walkway has sunk or tilted, we can look at it and recommend the most practical next step.
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