How To Fix a Cracked Concrete Patio: DIY vs. Professional Repair
Fixing a cracked concrete patio depends on the crack type: hairline cracks under a quarter inch can be filled with concrete caulk for $10 to $30, while structural cracks from settling or heaving require professional repair starting at $500 to $2,000.
Most homeowners who search for patio crack repair think the crack itself is the problem. It's usually not. The crack is a symptom of what's happening underneath the slab. In Bakersfield, the real cause is almost always thermal expansion from extreme heat cycles or soil movement from the region's clay-heavy ground. Fixing the surface without addressing the cause means the crack returns, often wider, within a year.
Steve Holloway Painting has been repairing and coating concrete patios across Bakersfield for over 44 years. We explain which repairs you can handle and which need professional help.
Types of Patio Cracks and What They Mean
Not all patio cracks are equal. The type, width, and pattern tell you whether you're looking at a cosmetic issue or a structural concern.
Hairline Cracks (Cosmetic)
Hairline cracks are surface-level fractures thinner than a credit card. They're cosmetic and caused by normal concrete curing or minor thermal expansion. Nearly every Bakersfield patio develops hairline cracks within the first few years. These are the easiest to repair and rarely indicate deeper problems.
Medium Cracks (Thermal Expansion)
Cracks between a quarter inch and half inch wide often follow control joint lines or run in straight patterns across the slab. These typically result from repeated thermal cycling, where the concrete expands during 105-degree summer days and contracts overnight when temperatures drop into the 60s. This 40-degree daily swing stresses the concrete hundreds of times each summer.
Structural Cracks (Soil/Settling)
Cracks wider than half an inch, cracks with one side higher than the other, or spider-web patterns radiating from a single point suggest structural movement. These may indicate soil settling, poor drainage, or an inadequately thick slab. Professional assessment is necessary before any repair because surface patching alone won't stop structural movement. Steve Holloway Painting's patio coating team evaluates the severity of the crack during every free estimate.
DIY Patio Crack Repair: When It Works
DIY repair is practical for hairline and minor cracks in patios that are otherwise level and structurally sound.
For cracks under a quarter inch , use a flexible concrete caulk or polyurethane sealant. Clean the crack with a wire brush and compressed air first. Apply the sealant with a caulk gun, then smooth it with a putty knife. The repair costs $10 to $30 in materials and takes about 30 minutes per crack. Choose a sealant rated for outdoor UV exposure, since Bakersfield's sun degrades interior-grade products within a single season.
For cracks between a quarter inch and half inch , use a concrete patching compound instead of caulk. These thicker products fill the gap and bond to both sides of the crack. Apply in layers no thicker than a quarter inch, letting each layer dry before adding the next. Sand the surface smooth after the final layer cures. Total cost runs $20 to $50 per crack.
DIY repairs are a temporary solution, but they don't address the underlying expansion or soil issues. If you fix the same crack twice in one year, the problem has moved beyond DIY territory.
When To Call a Professional
Professional patio repair makes sense when cracks are wider than half an inch, when sections of the slab have shifted vertically, or when you want a permanent solution that includes a protective coating.
Professional crack repair starts with grinding out the damaged area and filling it with commercial-grade menders that flex with the concrete rather than cracking again. In Bakersfield, contractors use products specifically designed for high-heat environments because standard patching compounds become brittle after a few Central Valley summers.
After repair, many homeowners choose to coat the entire patio with a polyurea or polyaspartic system that bridges minor cracks and prevents new ones from reaching the surface. Steve Holloway Painting's Penntek concrete coating system includes crack repair as part of the six-step installation process, so homeowners get both the structural fix and a durable, decorative surface in a single project.
Professional patio repair and coating costs $5 to $10 per square foot in Bakersfield. A typical 300-square-foot patio runs $1,500 to $3,000 for repair and coating combined, which is roughly a third of the $8,000 to $12,000 cost of tearing out and replacing the entire slab.
Frequently Asked Questions
Will concrete cracks get worse if I don't fix them?
Yes, in Bakersfield's climate, unrepaired cracks typically worsen each summer. Water enters during winter rain, and then the concrete expands in summer heat, pushing the crack wider. Each thermal cycle adds stress. A crack that starts at a quarter inch can reach an inch or more within two to three years if left untreated, eventually requiring full slab replacement.
Can I resurface a patio with multiple cracks?
Resurfacing works well when cracks are repaired first, and the slab is structurally stable. Steve Holloway Painting fills and bridges all cracks with Penntek menders before applying the coating system. Patios with extensive cracking covering more than 30% of the surface may need partial slab replacement before resurfacing. A free on-site assessment determines the best approach.
How long does a professional patio crack repair last?
Professional crack repair with commercial-grade flexible menders is designed to last 8 to 15 years in Bakersfield's climate. When combined with a polyurea coating system, the repair is protected from UV and thermal stress, which extends the life of both the repair and the surrounding concrete. Coating systems carry a Lifetime Workmanship Warranty + Penntek's Limited Lifetime Warranty.
Protect Your Patio the Right Way
Hairline cracks are a DIY fix with a tube of caulk. Wider cracks, shifting slabs, and recurring damage require professional repair that addresses the underlying causes, not just the surface. For Bakersfield homeowners dealing with heat-expansion cracking, a professional repair, paired with a protective coating, delivers the longest-lasting result at a fraction of the full replacement cost.
Steve Holloway Painting offers free patio assessments across Bakersfield and Kern County. We'll evaluate your cracks, explain your options honestly, and provide a written estimate. Contact us today to schedule yours.
