Do Helical Piers Work? What Actually Determines a Repair That Lasts

Written By Bridget Stieb, Director of Marketing at LUX Foundation Solutions • Reviewed by LUX’s foundation repair specialists serving Northern Virginia & Florida

You’ve probably already heard that helical piers might fix your foundation, and now you want to know if that’s true before you commit. 

Yes, helical piers, also known as screw piles, work when they’re installed the right way. As one of several deep foundation solutions, the design has been used for decades in many construction projects, from bridges to commercial buildings, before becoming a common option to repair existing foundations. 

So if you’re worried the method itself is unreliable, you can set that aside. What determines whether the repair holds is how it’s installed. A pier driven to the wrong depth or spaced incorrectly can fail even with perfectly good steel.

Here’s what to check for before you trust anyone with the job.

Key Takeaways

• Helical piers work when soil testing, torque, and pier spacing are done correctly; the pier itself is rarely the failure point.
• A good installation comes with documentation: soil data, torque readings, and engineering sign-off. If a contractor can’t produce it, that’s a warning sign.
• Some settling in the first few weeks after installation is normal. What matters is whether movement stops after that.
• Helical piers aren’t the right fit for every situation; rocky soil, heavy lateral wall pressure, and very light structures sometimes call for a different method.
• LUX offers a 25-year transferable warranty on installed piers, which carries over if you sell your home.

What Determines Whether Helical Piers Actually Work 

The piers are just steel. What actually stops your foundation from moving is everything that happens before and during installation. Skip any of these steps, and even the strongest pier won’t hold. Here’s what to ask about before you sign a contract, and what it means if a contractor can’t answer. 

Did They Actually Test the Soil? 

Skip soil testing, and a pier can stop in the same unstable layer that caused your settlement in the first place instead of reaching load bearing soil, holding your home in place for a year or two before the problem returns. Ask what soil data they used to confirm load bearing capacity and determine depth; a vague answer is a warning sign. 

Can They Show You the Torque Readings? 

Torque tells an installer how much weight a pier can safely carry. A reputable crew documents it as they go. If a contractor can’t produce torque documentation for your job, there’s no way to confirm the piers are actually rated for your home’s load, only that they look installed. 

Is the Spacing Based on Your Home, or Just Convenient? 

Pier placement should follow the weight of the structure and how it’s distributed across your foundation, not a standard pattern applied to every job. Ask why piers are going where they’re going. “Because that’s how we always do it” isn’t an engineering answer. 

Signs of a Good Helical Pier Installation vs. a Bad One

Here’s how to tell if an installation actually held, whether it’s your own repair or one you’re evaluating on a home you’re buying.

Good signs:

• Doors and windows that were sticking now open and close normally
• Visible cracks stop widening within a few months of the repair
• Floors feel level again, or noticeably closer to level
• The contractor provided documentation (torque logs, engineering sign-off) without you having to ask twice

Warning signs:

• Cracks that were “repaired” reopen within a year
• New cracks appear near the old ones
• Doors or windows that improved briefly start sticking again
• No paperwork exists beyond an invoice

One thing worth knowing: some settling in the weeks right after installation is normal as the soil around the piers resettles. What matters is whether movement stops after that, not whether there’s zero movement on day one.

When Helical Piers Aren’t the Right Fit 

Helical piers work well for most residential foundation repairs, but they’re not automatically the right choice for every situation. A few cases where a different method might make more sense:

• Rocky or obstructed soil. Large boulders, buried debris, or shallow bedrock can prevent a pier from being installed deep enough to provide proper support. A soil investigation beforehand catches this early. 
• Significant lateral pressure. Helical piers resist vertical load exceptionally well, but horizontal soil pressure, like water pushing against a basement wall, usually calls for a different approach entirely.
• Very light structures. Small sheds or other lightweight support structures may not generate enough load for helical piers to be worth the investment. Simpler solutions may suffice.
• Alternative pier types. Depending on your soil and structure, another pier type may be a better fit. How helical piers cost compared to other methods is often part of that conversation, but it depends on your specific site, not a general rule, so it’s worth asking your contractor to walk you through the trade-offs. 

None of these conditions automatically rule out helical piers. Your contractor should review them with you before deciding whether they are appropriate. The best repair method depends on your soil conditions, the weight of your home, and what the foundation inspection finds. 

When a Different Method Might Fit Better 

Not every foundation problem calls for piers, and not every pier is the same type. A few examples: 

• Bowing or inward-moving basement walls from lateral soil pressure are usually addressed with carbon fiber straps or wall anchors, not piers.
• Larger homes with deep, unstable soil sometimes call for push piers instead of helical piers, depending on structure weight and site access.
• A sunken concrete slab, like a garage floor, is a different repair path entirely, usually concrete lifting rather than piers. 

A proper foundation inspection helps determine the cause before recommending a repair method.

Get a Professional Foundation Assessment 

Helical piers work. The technology isn’t in question; they’re used in both new construction projects and repairs to existing structures right now, some standing for decades. What determines whether yours holds is everything covered above: soil testing, torque, spacing, and documentation proving it was done right. 

The bigger risk is choosing the wrong contractor or moving ahead without the proper engineering work, not the technology itself. Start with a professional inspection, ask each contractor the questions above, and compare at least three estimates before deciding on a repair plan.

LUX Foundation Solutions has installed helical piers across Northern Virginia, West Virginia, North Central Virginia, and the Shenandoah Valley for over 50 years, on challenging soil conditions specific to this region. If you’re dealing with settlement, sticking doors, or foundation cracks and want to know whether helical piers are the right fix for your home, get a free, no-obligation inspection now. 

Frequently Asked Questions