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Lally Columns vs. Jack Posts: Why Lally Columns Are the Superior Choice

In many homes, particularly older ones, jack posts are commonly installed as additional support to address sagging beams or shifting floors. These adjustable steel posts provide a quick and convenient solution for reinforcing areas that may have weakened over time. However, jack posts are not designed to serve as a permanent fix.


In contrast, when newer homes are constructed, they are typically built with lally columns as the standard for structural support. These columns are engineered to provide long-term stability and durability, ensuring the foundation remains secure for decades. Unlike jack posts, which may need ongoing maintenance or replacement, concrete lally columns are a permanent solution designed to handle the heavy loads and demands of a home’s structure.


At New England Foundation Crack Repair, we often encounter older homes where jack posts have been added over the years. While they serve their purpose in the short term, replacing them with steel lined, concrete filled lally columns ensures your home’s foundation is built to last.


What Are Concrete Lally Columns?

Lally columns are steel tubes filled with concrete, designed to provide permanent, robust structural support. These columns are a staple in construction projects and are commonly used to reinforce load-bearing beams, floors, and other critical components of a building.

Key Features of Concrete Lally Columns:

  • Material: Steel exterior with a solid concrete core.

  • Strength: Engineered to handle heavy loads with ease.

  • Durability: Built to endure heavy use, offering long-lasting performance and stability over time.

  • Applications: Ideal for long-term structural reinforcement in homes, garages, and commercial buildings.


What Are Jack Posts?

Jack posts, also called adjustable steel columns, are temporary or semi-permanent supports. These posts feature an adjustable screw mechanism, allowing them to fit different heights, making them convenient for short-term applications such as repairs or renovations.

Key Features of Jack Posts:

  • Material: Steel with an adjustable telescoping mechanism.

  • Purpose: Typically used for temporary support during repairs.

  • Applications: Useful for propping up sagging beams or providing extra support while permanent solutions are installed.


  • A basement with exposed wooden beams, featuring a steel-lined, concrete-filled lally column providing permanent structural support positioned next to a temporary steel jack post. The space is filled with construction materials, including buckets, tools, and insulation, indicating ongoing renovation or structural repair work. A wooden staircase leads up from the basement to the next level, highlighting the transitional nature of the project.


Why We Recommend Concrete Lally Columns

While jack posts can be a helpful temporary solution, they fall short when compared to concrete lally columns for permanent structural needs. Here’s why lally columns are the better choice:

  1. Durability and Longevity: Steel-lined, concrete-filled lally columns are built to provide unparalleled strength and long-term stability, ensuring your home’s foundation remains secure for decades. The combination of a steel exterior and a concrete core makes them highly resistant to compression. Once installed, they require little to no maintenance and provide decades of reliable support.

  2. Superior Load-Bearing Capacity: Lally columns are specifically designed to handle heavy, long-term loads. Whether supporting beams, floors, or other critical structures, they offer unmatched strength compared to jack posts, which are better suited for lighter, temporary loads.

  3. Permanent Solution: Unlike jack posts, which may require frequent adjustments or replacements over time, concrete lally columns provide stability and peace of mind, knowing your home’s foundation is reinforced with a permanent solution.

  4. Enhanced Safety: With lally columns, you eliminate the risks associated with jack posts, such as extreme rust, weakening, or failure under heavy loads. This makes them the safest option for ensuring your home’s structural integrity.

  5. Increased Property Value: Installing lally columns adds value to your home by reinforcing its foundation. Buyers are more likely to trust a home with permanent, professionally installed structural supports.


Jack Posts: Why They Fall Short

While jack posts are useful in specific scenarios, they are not designed for permanent support. Here are the limitations of jack posts:

  • Temporary Use Only: Jack posts are ideal for short-term applications, such as during renovations or minor repairs. They are not suitable for long-term stability.

  • Limited Load Capacity: Jack posts can’t handle the same heavy loads as concrete lally columns, making them less reliable for major structural support.

  • Potential Instability: Adjustable mechanisms may loosen or fail under sustained pressure, posing a safety risk.

Concrete Lally Columns vs. Jack Posts: Side-by-Side Comparison

Feature

Concrete Lally Column

Jack Post

Material

Steel tube filled with concrete

Steel with adjustable screw mechanism

Purpose

Permanent structural support

Temporary or semi-permanent support

Load Capacity

High – Supports heavy, long-term loads

Moderate – Best for lighter loads

Installation

Requires professional installation

DIY-friendly and adjustable

Maintenance

Minimal, designed to last decades

Requires regular checks and adjustments

Our Recommendation: Choose Lally Columns

At New England Foundation Crack Repair, our goal is to provide solutions that enhance the safety, stability, and longevity of your home. Lally columns are the gold standard for structural support. They offer:

  • Permanent, maintenance-free reliability under ideal conditions

  • Unmatched strength for heavy loads.

  • Long-term peace of mind for homeowners.

While jack posts can serve a purpose during temporary fixes or renovations, they are not a substitute for the durability and dependability of lally columns.


Conclusion

When it comes to protecting your home’s foundation, the choice is clear: Lally columns are the superior solution. They offer the strength, stability, and longevity needed to ensure your home remains safe and secure for decades to come.

At New England Foundation Crack Repair, we specialize in installing lally columns with precision and expertise. Let us help you reinforce your home’s foundation with the best materials and methods available.


📞 Contact us today to schedule a free consultation and discover how we can provide the permanent support your home needs!

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971 Providence Rd. #104

Whitinsville, Ma 01588

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© 2025 by New England Foundation Crack Repair, LLC.

Located in Whitinsville, Massachusetts and serving greater New England

MA HIC # 196513  MA CSL #  CS-118940 RI # 43292  CT #HIC.0661980

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