It's one of the most common questions we hear from homeowners across Richmond: "Why is my new driveway already cracking?" The short answer is that concrete cracks — all of it, eventually, to some degree. That can sound alarming, but in most cases it's completely normal and doesn't mean your driveway or patio was installed poorly. The real question isn't whether concrete will ever crack, it's which cracks are cosmetic and which ones signal a bigger problem.
In this guide, we'll explain why concrete cracks in the first place, walk through the different types of cracks you might see on your Richmond property, help you tell the difference between normal and serious cracking, and cover what can be done to fix or prevent it.
Concrete is a rigid material made from cement, water, sand, and aggregate. As it cures, the water in the mix evaporates and the slab shrinks slightly — a process called shrinkage. Because concrete can't compress to accommodate that shrinkage, it has to relieve the stress somewhere, and that's where cracks come from. Add in Richmond's clay-heavy soil, which expands when wet and contracts when dry, along with seasonal freeze-thaw cycles, and you have several natural forces working against any concrete slab over time.
One of the most misunderstood parts of any concrete project is the control joint — those straight, shallow grooves you see cut into a driveway or sidewalk in a grid pattern. They're not decorative. Control joints are intentional weak points that give the concrete a planned place to crack as it shrinks, instead of cracking randomly across the surface. A well-placed set of control joints is one of the biggest factors in how clean a slab looks years down the road, which is why proper spacing is something we plan carefully on every driveway and patio we install.
Thin, shallow cracks less than 1/8 inch wide, usually caused by normal shrinkage during curing. These are cosmetic and don't affect the structural integrity of the slab. Most driveways and patios develop a few of these over the years, and they're generally nothing to worry about.
If a crack follows the line of a control joint, that's the joint doing exactly what it was designed to do. This is considered normal and expected, not a defect.
A crack wider than about 1/4 inch, or one where one side of the crack sits higher or lower than the other, suggests the ground underneath has shifted or settled unevenly. This is worth having evaluated, since it can point to drainage issues or soil movement that may continue if not addressed.
If the edges of a crack are flaking, chipping, or crumbling — a condition called spalling — it often points to water damage, freeze-thaw deterioration, or issues with the original concrete mix. This type of cracking tends to get worse over time without repair.
Large, deep cracks — especially diagonal cracks in a foundation wall or cracks that run through multiple sections of a slab — can indicate a structural issue like significant soil settlement. These should be evaluated by a professional promptly, since they're more likely to worsen and can point to problems beyond the concrete itself.
Not every crack requires the same fix. Hairline and joint cracks can often simply be monitored or filled with a flexible concrete caulk to keep water out. Moderate cracking or surface wear across a driveway or patio — without major structural movement — is frequently a good candidate for resurfacing, which applies a fresh overlay rather than replacing the whole slab. Severe cracking, major settlement, or structural damage usually calls for full replacement of the affected section. If you're seeing more than a few concerning cracks, contact our team for a free on-site evaluation and we'll tell you honestly which category your situation falls into.
The American Society of Concrete Contractors notes that a large share of unplanned cracking traces back to either inadequate curing practices or control joints that were spaced too far apart — both of which are avoidable with experienced installation.
Not all cracks carry the same weight depending on where they show up. A hairline crack in a patio is mostly a cosmetic issue, since patios don't carry vehicle loads and have more forgiving structural requirements. A crack in a driveway deserves a bit more attention, since repeated vehicle weight can gradually widen an existing crack that would otherwise stay stable under foot traffic alone. Cracks in a foundation wall or slab are the most important to evaluate carefully, since they can be early indicators of soil settlement issues that, left unaddressed, may eventually affect the structure of the home itself rather than just the concrete. If you notice a crack in a foundation, especially one that's wider at the top or bottom than the other end, it's worth having it assessed sooner rather than later.
For minor hairline cracks, homeowners can often handle basic maintenance themselves. A flexible concrete crack sealant, available at most hardware stores, can be applied to a clean, dry crack to keep water from seeping in and worsening the damage over winter freeze-thaw cycles. Cleaning debris out of a crack before it's sealed, and re-checking it after heavy rain, is a simple habit that extends the life of a driveway or patio between professional inspections.
That said, there's a clear line where DIY should stop. Any crack wider than about 1/4 inch, cracks with uneven height on either side, or cracks that seem to be growing month over month should be evaluated by a professional rather than just filled and ignored. Filling a crack that's actually a symptom of soil settlement or drainage failure only hides the problem temporarily — the underlying cause will keep affecting the slab until it's properly addressed. If you're ever unsure which category a crack falls into, it costs nothing to have it looked at; we offer free on-site evaluations for Richmond homeowners specifically for this reason.
Concrete behaves differently depending on the season it was poured in and the season it's currently experiencing. A slab poured during Richmond's hot, humid summer cures faster on the surface than underneath, which can lead to a specific type of shallow cracking called crazing if it isn't cured properly with adequate moisture retention. A slab poured in colder months needs protection from early freezing before it reaches sufficient strength, since ice crystals forming in unset concrete can permanently weaken it. Once a slab is in place, winter is generally the season when existing cracks are most likely to visibly worsen, since water that has worked its way into small cracks during fall rains can freeze and expand, widening the gap — which is part of why fall is a smart time to inspect and seal any cracks before winter sets in.
Central Virginia's expansive clay soil is more prone to seasonal swelling and shrinking than sandier soils found elsewhere, which means a driveway or patio poured here needs a base and drainage plan suited to local ground conditions — not a generic, one-size-fits-all approach. An installer who works throughout Richmond, Henrico, and Chesterfield day in and day out will already understand how the clay in your specific neighborhood tends to behave, and can plan the base depth, drainage, and joint spacing accordingly.
Yes, fine hairline cracks and cracks along control joints are a normal part of how concrete cures and are not a sign of poor workmanship on their own.
Watch for cracks wider than about 1/4 inch, cracks where one side is higher than the other, or cracks with crumbling edges — these are worth having evaluated by a professional.
In many cases, yes. Sealing hairline cracks or resurfacing a slab with moderate wear can restore the look and function without a full tear-out and replacement.
Yes. Roots growing beneath a slab can lift and crack it from underneath, which is why we consider nearby trees and root systems when planning a driveway or walkway layout.
Proper base compaction, correctly spaced control joints, adequate reinforcement, and good drainage are the biggest factors — all of which our team plans for on every project we install.
Contact Number: (804) 640-9006
Email: info@smith-evergreen.com
Website: www.smith-evergreen.com
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2400 Old Brick Rd Suite 164, Glen Allen, VA 23060
