Helical Piers: What They Are — and When They Actually Make Sense
Most owners don’t go looking for information about helical piers.
They hear the term during an inspection or estimate — often for the first time — and suddenly it sounds like the obvious solution.
Before you assume anything, it helps to slow the conversation down.
This page explains what helical piers are, why they’re recommended so often, and what hearing the term does not automatically mean for your house.
Why owners hear about helical piers
Helical piers are frequently recommended when someone believes a foundation needs support from deeper soil.
They tend to come up when:
Cracks are present
Floors feel uneven
Settlement is suspected
Soil conditions are uncertain
They are also commonly mentioned early in sales conversations because they sound definitive and technical — which can feel reassuring when you’re worried.
What a helical pier actually is
A helical pier is a steel shaft with one or more helix-shaped plates welded near the bottom.
It is installed by rotating (screwing) it into the ground until it reaches soil capable of supporting load.
Once installed, the pier transfers some or all of a structure’s weight to deeper soil layers.
In simple terms:
The pier bypasses weaker near-surface soils
Load is carried by deeper, more stable material
What helical piers are good at
Helical piers can be an effective solution in the right conditions.
They are commonly used when:
Surface soils have low bearing capacity
Deeper soils are known to be more competent
Access limits traditional excavation
Loads are predictable and well understood
They are also widely used in:
New construction
Additions
Lightweight structures
Engineered applications where soil conditions are documented
Why helical piers are recommended so often
Helical piers are popular for reasons that have nothing to do with your house specifically.
They are:
Fast to install
Highly marketable
Easy to explain in an estimate
Scalable across many projects
From a contractor’s perspective, they are a clean, repeatable solution.
That doesn’t make them wrong — but it does mean they are sometimes recommended before the full problem is understood.
What hearing “helical pier” does NOT automatically mean
Hearing this term does not automatically mean:
Your house is unsafe
Your foundation is failing
Deep support is required
Other options aren’t viable
Immediate action is necessary
It also does not mean:
Settlement is ongoing
Soil conditions have been verified
A single solution fits the whole house
A repair method being discussed does not equal a diagnosis.
Important context most owners aren’t given
Helical piers work best when:
Soil conditions are reasonably predictable
Loads are well defined
Installation depth is based on more than “refusal”
The underlying problem has been correctly identified
They are not a universal fix for:
Moisture-related movement
Drainage issues
Seasonal soil expansion
Cosmetic cracking
One-time settlement that has already stabilized
Without understanding why movement occurred, installing piers can address symptoms without addressing causes.
Helical piers vs. other solutions
Helical piers are one of many foundation support options.
Other approaches may include:
Drainage correction
Moisture management
Load redistribution
Monitoring over time
Different foundation support systems
The right approach depends on:
Soil behavior
Construction type
Age of the structure
History of movement
Whether movement is active or historic
No single system is “best” in all cases.
How MFRC suggests owners think about helical piers
Instead of asking:
“Do I need helical piers?”
A better question is:
“What problem are we trying to solve — and how do we know?”
Helical piers may be part of the answer.
They may also be premature.
Understanding the term helps you slow the conversation down and ask better questions before committing to a solution.
Related dictionary terms
(Each of these terms is explained in the MFRC Foundation Dictionary.)
A final note
This page is educational, not diagnostic.
Every house — and every soil profile — is different.
Understanding terminology gives you leverage in the conversation.
It does not replace evaluation.
