Page Summary

  • Arizona properties commonly use monolithic foundations, post tension foundations, and stem wall foundations, and foundation type identification determines correct repair options.
  • A Post Tension Foundation is a monolithic slab reinforced with a grid of steel reinforcement that is tensioned after the pour, helping the slab maintain shape with less cracking in moving soils.
  • Moisture intrusion can lead to oxidation and concrete wear, and durable repairs rely on properly prepared repair depth plus sealing and repainting to protect the repaired area.

Most property owners never need to think about the concrete beneath their floors until something changes, a crack appears, a floor feels different, or an older repair starts to show again. In Arizona, these moments are common because soil movement and moisture swings can stress slabs over time. When that happens, the best next step is understanding what foundation type is under the building and what that foundation system was designed to do.

A Post Tension Foundation is one of the most common engineered slab systems used in Arizona. It is part of the monolithic foundation family, meaning the foundation is a single continuous slab, but it includes reinforcement distributed across the slab that is tensioned after the concrete is placed. This design helps the slab maintain its shape with less cracking in soils that can move, shift, or expand.

Concrete Repairman LLC works with homeowners and commercial property decision makers across Arizona to evaluate post tension foundations, identify the likely cause of cracking or deterioration, and plan repairs that protect both the concrete and the reinforcement system.

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Most people will never try to understand the physical components of a structure that lie below a home’s flooring. If and when the time comes for a foundation repair, understanding your foundation type and characteristics will lead to the best service and solutions. Contractors build homes in Arizona using three different kinds of concrete foundations: monolithic, post-tension (a type of monolithic) and stem wall foundations.

Monolithic Post Tension Foundations

What is a Monolithic Post Tension Foundation?

Monolithic Post Tension Foundation

A post-tension foundation also falls within the family of monolithic foundations but also contains an inner tension created after the concrete is poured – which is why it is called post-tension, or “after-tension.” A regular monolithic foundation probably contains a rebar inside only the perimeter, while a post-tension foundation contains a horizontal grid pattern of steel reinforcement throughout the slab. The steel bars become tense as the concrete cools, allowing the foundation to maintain shape with less cracking. The result is a strong foundation that allows some flexibility in its shape. This is particularly useful in places like Arizona, where the soils are prone to move, shift, or expand under concrete foundations. Unfortunately, over time, rebar reinforcement is subject to invading moisture that can cause oxidation and wearing of the foundation material. Arizona’s homeowners can stop these destructive effects with a full repair, sealing, and painting method provided only by seasoned expert James Belville and Concrete Repairman LLC.

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Until their residential or commercial foundation begins to deteriorate or fail, the characteristics of concrete foundations will remain mysterious to most home and property owners. It is common for a company to make foundation repairs without going very far beneath the surface, where the problem starts. James Belville knows that most repair companies and contractors often neglect to go deep enough, fail to create a lasting seal, and rarely repaint the surface of a repair. With a better understanding of their foundation type, homeowners and other property owners can take the correct steps for repairs and maintenance. If you have questions or concerns about your foundation or would like an estimate on the right solution, call James at Concrete Repairman LLC, the Valley’s best concrete repair experts, at (602) 418-2970.

The staff at Concrete Repairman LLC. are experts in foundation inspections and repair. We understand the issues Arizona homes have when it comes to protecting your home and the investment you have made. Concrete Repairman LLC’s founder, James Belville, is a Third generation concrete repair specialist with over 32 years of experience in the foundation repair and inspection industry. We are a licensed, bonded, and insured commercial and residential concrete contractor in Arizona, Concrete Repairman LLC has a full range of services.

If you are concerned about your home’s foundation or buying a home and worried that there may be a problem regarding its foundation, call James and get the answers, not excuses.

FAQs About Post Tension Foundation

A post-tension foundation is a reinforced concrete slab that uses high-strength steel cables (tendons) to provide additional structural integrity. After the concrete is poured and cured, the wires are tensioned using a hydraulic stressing jack, which compresses the slab and increases its resistance to cracking, soil movement, and settlement.

Traditional slabs use rebar reinforcement, while post-tension foundations incorporate tensioned steel cables anchored within the concrete. The tensioning process places the slab in compression, allowing it to handle better expansive clay soil movement common in regions like Arizona.

Arizona’s expansive clay soils are prone to swelling and shrinking, which can cause cracks in conventional foundations. Post-tension systems are engineered to resist these soil pressures by maintaining uniform stress across the concrete slab, making them ideal for the state’s unique soil conditions.

Warning signs include visible cracks in floors or walls, uneven slabs, broken cable ends protruding, or unexplained settling. If any of these occur, homeowners should contact a qualified foundation repair specialist for a post-tension inspection.

Yes. Damaged or corroded post-tension cables (tendons) can be safely replaced by trained professionals using proper stressing and anchorage techniques. It’s critical to avoid cutting into the slab without identifying cable locations, as this can cause severe structural and safety issues.

Experts recommend an inspection every 2–3 years, or immediately if cracks, lifting, or settling appear. Regular inspections help detect corrosion, cable tension loss, or anchor movement before they compromise the foundation’s stability.

No,  drilling or coring through a post-tension slab without verifying cable locations can be extremely dangerous. Cutting a live cable under tension can cause injury and significant structural damage. Always use X-ray or ground-penetrating radar (GPR) before any slab modification.

When properly installed and maintained, post-tension slabs can last 50 years or more. Longevity depends on soil stability, moisture control, and regular inspection of cables and anchor points to prevent corrosion or tension loss.

Homeowners should maintain consistent moisture levels around the foundation, monitor for cracks, and ensure proper drainage away from the structure. Regular inspections by a foundation repair contractor can identify early signs of wear or soil movement.

Trusted experts like Concrete Repairman LLC specialize in post-tension foundation inspections, cable replacement, and structural repair. With decades of experience in Arizona’s soil conditions, they provide accurate assessments and long-lasting repair solutions.

Why Trust Concrete Repairman

James Belville – Foundation Repairman™ – 480-725-7614

Post tension foundation repairs require experience, careful evaluation, and workmanship that respects the foundation system.

At Concrete Repairman LLC, we are proud to be a third generation foundation repair company with over 30 years of hands on experience. Led by James Belville, a master in concrete foundation repair, our team has served homeowners in Phoenix, Arizona, with unparalleled expertise and dedication.

Concrete Repairman LLC. Roc 300512
Licensed-Bonded-Insured Contractors of Arizona.

James Belville, a concrete and foundation repair expert, leads Concrete Repairman LLC. With over 30 years of experience, he provides top-quality repair solutions. Contact 602-418-2970 for expert foundation services.

Experience with real post tension repair outcomes

Our perspective is built from hands on field work. We focus on identifying where the problem begins, not stopping at the surface. That approach supports repairs that hold up better over time.

Process built around protection and clarity

Concrete Repairman LLC prioritizes:

  • Confirming post tension foundation construction and likely reinforcement layout
  • Connecting observed damage to realistic causes, including moisture intrusion and material wear
  • Repair preparation that reaches the affected zone
  • Sealing and surface protection steps that help reduce repeat deterioration

Communication that supports better decisions

Foundation issues can feel uncertain. We explain what we observe, what it likely means, and what options fit the condition and the property’s needs.

At Concrete Repairman LLC, call our Foundation Repair office in the Greater Phoenix Metro Area, including Gilbert, Glendale, Queen Creek, and Sun City. If you suspect foundation damage or want to protect your home from potential issues, contact us at (602) 418-2970. Our expert team is ready to inspect thoroughly and offer the best repair solutions to safeguard your home for years.