The Simplest Answer

Think of it this way: push piers are nails, and helical piers are screws.
One is driven; the other is screwed.

Both systems accomplish the same goal — they add support to a settling foundation, transferring the structural load to deeper, more stable soil layers. Both can lift or stabilize your foundation and are relatively easy to install without large, cumbersome machinery.

The Key Differences

The primary difference between push piers and helical piers lies in how they’re installed.

Push Piers (a.k.a. Resistance Piers)

Push piers are hydraulically driven (pushed) deep into the soil beneath your foundation using the weight of your home as resistance.

• Installed parallel to your foundation (eccentrically)

• Attached to your foundation first, then driven into the soil

• Ideal for heavier structures that provide adequate resistance

Helical Piers (a.k.a. Helical Piles)

Helical piers are hydraulically screwed into the soil using torque motors attached to a drive arm.

• Installed at an 8–10° angle under your foundation

• Feature round steel plates (helices) that “screw” into stable soil layers

• Attached after installation via a bracket below the soil line

• Each section (3.5–11 ft) contains one or more helices, depending on load requirements

Both pier types use a steel bracket connected to your footing to provide lift or additional load support.

Signs You Might Need Push Piers vs Helical Piers

Recognizing early signs of foundation settlement can save you from costly structural repairs. While both push piers and helical piers are designed to stabilize and restore foundations, the symptoms that indicate which system you need can vary depending on your soil type, structure weight, and site conditions. Here’s how to tell which solution might be right for your home:

Signs You Might Need Push Piers

• You have a heavy, multi-story home or structure. The building’s weight is essential for hydraulically driving push piers deep into stable soil or bedrock.
• You notice significant vertical settlement, such as large cracks in brickwork or visible sinking in one area of the foundation.
• Your property sits on dense or compacted soil, where driving steel piers through the structure’s weight allows lasting stability.
• There’s evidence of foundation drop or uneven floors that continue to worsen over time.

Signs You Might Need Helical Piers

• Your home is lightweight or newly built, such as a single-story residence or addition that lacks the mass needed for push pier installation.
• You live in an area with soft, expansive, or inconsistent soil that shifts with seasonal moisture changes.
• You notice tilting chimneys, stair-step cracks in masonry, or shifting porches. These indicate that the soil beneath is losing its bearing strength.
• You’re planning a new construction or addition and want to prevent future settlement by installing deep foundational support before building.

Whether your home shows subtle movement or more severe settlement, these signs shouldn’t be ignored. A professional inspection can determine which pier system offers the most effective long-term protection for your foundation.

Installation & Material Considerations

Both systems are made from high-strength steel, and depending on the manufacturer, may be:

• Galvanized (zinc-coated) for corrosion resistance

• Powder-coated for surface protection

• Bare steel, depending on soil chemistry

While both have similar goals, soil type and building load determine which is best for your situation.

For a detailed look at our process, visit Our Diagnostic Foundation Inspection Procedure.

Which Pier Works Best?

Both push and helical piers can stabilize or lift a settled foundation — but each has its own strengths and limitations.

When Push Piers Work Best

Push piers rely on your home’s weight to drive them into competent stratum (bedrock or stable soil). They’re most effective for:

• Heavier homes or multi-story structures

• Denser soil conditions

• Depths of up to 80 feet (sometimes exceeding 140 ft)

Limitations:

• Ineffective for lightweight homes that lack downward force

• Can buckle in soft, wet, or sandy soils

When Helical Piers Are Better

Helical piers are ideal for:

• Light structures (single-story homes or wood framing)

• Loose or loamy soil conditions

• New construction where soil instability is known

Limitations:

• Lower load capacity than push piers (unless using larger piles)

• Difficult installation in rocky or high-density soils

• May require more piers for equivalent load support

If your contractor only recommends helical piers, it may be due to low structure weight — or a lack of proper push pier equipment or training.

Always ensure your contractor performs a soil analysis before recommending a system.

Pier Coatings — Yeah or Nay?

Both pier types are made of steel, which raises concerns about corrosion.

While soil moisture contributes to corrosion, high alkalinity and salt-rich soils (common in coastal California) accelerate deterioration.

However, most residential pier systems today are:

• Powder-coated or hot-dip galvanized (lifespan 50+ years)

• Installed deep below oxygen-rich layers, where corrosion slows significantly

Pro Tip: Always make sure the foundation bracket is corrosion-protected — it’s the part most exposed to surface moisture.

For a technical overview of steel corrosion, see the U.S. Department of Transportation’s corrosion guidelines.

The Final Question: How Many Piers Are Needed?

This is one of the most common homeowner questions:

“If a single pier supports ‘X’ amount of weight, why do I need so many?”

Here’s why:

• Your foundation design and soil determine pier spacing.

• The footing’s depth and strength affect how load distributes.

• Engineers account for dead load (structure) and live load (furniture, people, etc.).

• Weaker or shallow footings need closer pier spacing to prevent cracking.

Even if four piers could hold your total weight, your foundation could fail due to stress concentration — which is why engineering precision is vital.

Why One Contractor Might Only Recommend Helical Piers

Without a geotechnical soil analysis, some contractors default to helical piers simply because:

• The structure doesn’t weigh enough for push piers

• They lack proper push pier equipment

• They don’t have training or certification in alternative systems

A qualified foundation specialist — like BristolFX — evaluates soil conditions, structure type, and load requirements before recommending any system.

Sometimes, pushing or screwing steel into the ground isn’t even the best fix — the key is proper diagnosis.

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Want to Learn More?

BristolFX (Foundation Tech, Inc.) is a trusted foundation repair specialist serving the Los Angeles Basin and surrounding Southern California areas.

We provide:

• Foundation stabilization and repair

• Seismic retrofitting

• Soil and slope stabilization

• Waterproofing and drainage correction

Have questions about foundation piers or soil movement under your home?
Call 855-650-2211 or visit BristolFX.com to schedule a detailed inspection and customized repair plan.