Support methods

Foundation Stabilization and Piering in Ankeny

Foundation stabilization aims to limit further movement. Piers and underpinning can add support below a foundation, but the right method depends on what your home needs.

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Hand-drawn house cutaway illustrating helical piers beneath a foundation

What are stabilization and underpinning?

Stabilization means making the support more stable. Underpinning means adding or strengthening support beneath an existing foundation. Piers are one way to do that.

A plan may also aim to lift a settled area. That is a separate goal, and the amount of lift depends on the home and site. If you are still sorting out the signs, start with the settlement guide.

Similar repair plans can have important differences.

Two proposals may both call for piers but use different locations, depths, or goals. Without those details, it is hard to know whether the plans address the same problem.

Ask what evidence shows that added support is needed. A written plan should explain how the system fits the loads, soil, and access at your home.

How push piers and helical piers differ

Push piers

These supports are pushed into the ground using the weight of the building during installation. They carry weight to deeper support.

Helical piers

These supports have spiral plates and are screwed into the ground. Their use depends on the soil, weight to be supported, and access.

Neither method is right for every home. If a wall bends inward, review wall support options as well. Sideways wall movement and downward settlement are different problems.

Get the details in writing.

  • Where will each support go, and why?
  • What is the plan for depth and weight support?
  • Is the goal to hold the foundation, lift it, or both?
  • How will results be checked?
  • Who handles drainage, permits, and repairs to disturbed areas?

Ask whether an independent engineer should review the plan. The inspection guide explains that role, and the cost guide helps you compare complete bids.

A practical next step

Have a support plan you want to discuss?

Describe the movement and any repair advice you have received. An on-site inspection is still needed.

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