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Concrete in Longmont, CO (80501) · Local Professionals

Denver Concrete · Fast response in Longmont and the Denver area · Free estimate 24h

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Longmont's mix of older Main Street-era homes and fast-growing eastern subdivisions means concrete takes a beating from Colorado's freeze-thaw cycles, expansive clay soils, and heavy spring runoff. Denver Concrete has been fixing cracked driveways, settling patios, and spalling foundations across Longmont (80501) and the Denver metro since 2016.

Whether your driveway is crumbling near the St. Vrain Greenway or your garage slab is sinking on the east side, our ACI Certified team knows Longmont's ground conditions and what it takes to build concrete that lasts. We handle everything from repair and resurfacing to new pours, and we pull permits the right way.

Concrete Services for Longmont, Colorado

Longmont sits on expansive clay soils that shift with moisture and temperature swings, and our freeze-thaw winters are brutal on concrete. Driveways crack and heave. Patios settle. Garage slabs sink. Sidewalks buckle and create trip hazards that invite liability. We see it all, from older neighborhoods near downtown to the newer subdivisions spreading east toward I-25. Sloped and hillside lots add another layer of challenge, and we know how to pour and finish concrete that handles Longmont's terrain.

Our licensed crew specializes in Concrete Repair and Resurfacing for cracked, spalling, or crumbling surfaces, and in Concrete Slabs and Foundations for new construction and foundation work. We've been serving Longmont and surrounding areas since 2016, and we understand local permitting, right-of-way rules, and ADA compliance for commercial walkways.

Our services in Longmont

How We Work in Longmont

Step one is a free on-site assessment. You call us at (720) 575-1321 or request an estimate online, and we visit your property to see the damage, check drainage, test soil, and understand what caused the problem. We ask about your timeline and budget, and we explain what we recommend and why.

Step two is the work itself. We pull all required permits from the City of Longmont, coordinate with HOA or property management if needed, and schedule the job around your life. For driveways and patios, we prep the base, handle any necessary demolition, pour and finish the concrete, and manage curing. For repairs, we grind, clean, and resurface or seal. For slab lifting, we use mud jacking or polyurethane injection to raise sunken concrete without tearing it out. We respect tight lot access, watch for underground utilities, and protect your landscaping.

Step three is cleanup and final walkthrough. We haul away all debris, sweep and power-wash the area, and walk you through the finished work. Your property is clean and ready to use.

Concrete repair and resurfacing in Longmont typically runs from $3 to $5 per square foot, depending on damage severity, prep work, and whether you're sealing or polishing. New concrete slabs and foundations start at $5 per square foot. Driveways and patios run $6 per square foot and up. Stamped or decorative finishes start at $10 per square foot. Concrete leveling and slab lifting run $4 per square foot. The final price depends on the size of the area, soil conditions, whether we're removing old concrete, and local permit fees. Call us at (720) 575-1321 for a free estimate. We'll give you a realistic number based on what we see on your property.

✅ ACI Certified, licensed and insured for work in Longmont and nearby areas.

Why does my Longmont driveway crack and heave every winter?
Longmont's freeze-thaw cycle and expansive clay soils are the culprits. Water enters hairline cracks, freezes, expands, and pushes the concrete up. Over time, the surface spalls and breaks apart. Poor drainage makes it worse. We repair existing damage and can pour new concrete with proper base prep and slope to shed water. If your driveway is sinking or heaving, we can also lift it with slab jacking before it cracks further.
How quickly can Denver Concrete repair a cracked patio or sunken sidewalk in Longmont?
Once we pull the permit from the City of Longmont, most repairs take one to three days, depending on size and weather. For a simple resurface or seal, we can often schedule within a week. For new concrete pours, we schedule around the weather and curing time (typically 7 to 10 days before you can use it). Call us at (720) 575-1321 to discuss your timeline.
What does concrete sealing cost in Longmont, and do I really need it?
Sealing runs about $0.75 per square foot and is absolutely worth it in Longmont. Sealer protects concrete from water penetration, freeze-thaw damage, staining, and UV fading. In our climate, sealed concrete lasts significantly longer. We recommend sealing new concrete after it cures, and resealing every two to three years on high-traffic areas like driveways and patios.
Do I need a permit from the City of Longmont to replace my driveway or pour a new patio?
Yes. Driveway and patio work in Longmont requires a building permit, and sidewalk work may trigger right-of-way permits if it touches public property. We handle all permitting for you, including inspections. Our ACI Certified team knows Longmont's codes and setback rules, and we make sure your project complies. It costs a bit more upfront, but it protects you and your property.
My HOA says I need approval before I replace my driveway. Can you help coordinate that?
Absolutely. We work with HOAs and property managers all the time in Longmont. You submit your plans and our estimate to the HOA, get their sign-off, and then we schedule the work. We can provide architectural drawings, photos of similar finishes, and timelines to speed up approval. Just let us know your HOA's contact and requirements when you call (720) 575-1321.
Are you fully licensed and insured for concrete work in Longmont?
Yes. Denver Concrete is fully licensed and insured with general liability and workers' compensation coverage. We're ACI Certified, which means our team has passed rigorous training in concrete design, placement, and finishing. When you hire us, you're protected if anything goes wrong, and we stand behind our work.
What's the best time of year to pour new concrete in Longmont?
Spring and fall are ideal in Longmont because temperatures are moderate and curing happens smoothly. Summer heat can cause rapid drying and cracking if we don't manage it carefully, and winter frost can damage fresh concrete. That said, we pour year-round with proper precautions. If you're in a hurry, we can work around the season. Just call (720) 575-1321 to discuss timing and any extra care your project might need.
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Our services

Our Concrete Services in Denver

All your work handled by qualified professionals in Denver

Concrete Driveways

Durable new driveways built to add real curb appeal and last for decades.

Included in your service

  • Compacted sub-base and high-strength concrete mix
  • Correctly spaced control joints to limit cracking
  • Broom, stamped, or exposed aggregate finish of your choice
  • Free written estimate within 24h
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Concrete Patios

Custom patios that expand your outdoor living space and add lasting value.

Included in your service

  • Proper grading and drainage away from your home
  • Broom-finish or decorative stamped and colored designs
  • Reinforced slab poured for long-term durability
  • Free written estimate within 24h
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Stamped & Decorative Concrete

Stone, brick, slate, and wood looks in stamped and colored concrete at a fraction of the cost.

Included in your service

  • Stamped, stained, colored, and exposed aggregate finishes
  • Custom patterns matched to your home and landscape
  • Sealed surface for lasting color and protection
  • Free written estimate within 24h
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Concrete Repair & Resurfacing

Repair of cracked, spalling, and worn concrete before the damage spreads.

Included in your service

  • Crack, spalling, and surface damage repair
  • Full resurfacing to restore look and safety
  • Color and finish matched to the original slab
  • Free written estimate within 24h
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Concrete Leveling & Slab Lifting

Lift and level sunken slabs to remove trip hazards without full replacement.

Included in your service

  • Fast lifting of settled driveways, patios, and walkways
  • Trip hazards eliminated at a fraction of replacement cost
  • Stable base correction for shifting soil
  • Free written estimate within 24h
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Concrete Slabs & Foundations

Poured slabs and footings engineered for garages, additions, and new construction.

Included in your service

  • Engineered thickness and steel reinforcement
  • Properly compacted base for long-term stability
  • Footings for garages, sheds, and room additions
  • Free written estimate within 24h
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Sidewalks, Walkways & Steps

Safe, code-compliant sidewalks, walkways, and steps built to local permit standards.

Included in your service

  • New and replacement sidewalks, walkways, and steps
  • City sidewalk repairs handled to permit standards
  • Slip-resistant, code-compliant access throughout
  • Free written estimate within 24h
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Concrete Pool Decks

Slip-resistant pool decks that stay cooler underfoot and complement your backyard.

Included in your service

  • Broom, textured, or decorative slip-resistant finishes
  • New installation and resurfacing of existing decks
  • Cooler surface temperature underfoot
  • Free written estimate within 24h
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Concrete Sealing

Professional sealing that protects concrete from stains, moisture, and surface wear.

Included in your service

  • Protection against stains, moisture, and wear
  • Keeps colors and decorative finishes vivid
  • Extends the life of driveways, patios, and decks
  • Free written estimate within 24h
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Concrete Removal & Replacement

Full tear-out and haul-away of failing concrete, followed by a fresh, properly poured replacement.

Included in your service

  • Removal and haul-away of old, cracked concrete
  • New sub-base prepared before the pour
  • Fresh slab with the finish of your choice
  • Free written estimate within 24h
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Garage Floors

Level, crack-resistant garage floor slabs sealed to resist oil, moisture, and daily wear.

Included in your service

  • Smooth trowel or broom finish to your preference
  • Sealed against oil stains and moisture
  • Crack-resistant slab for new builds and replacements
  • Free written estimate within 24h
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Polished Concrete

Ground and polished floors with a smooth, low-maintenance, high-gloss or matte finish.

Included in your service

  • Mechanical grinding and multi-step polishing
  • High-gloss or matte finish to your preference
  • Sealed for durability and easy cleaning
  • Free written estimate within 24h
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