Foundation Helical Pier Solution

Helical piers are giant metal screws driven into soil to stabilize and repair a foundation floor or to lift lighter structures like decks or stoops.

Examples of foundation failures where helical piers are used usually starts with unevenly settled floors -- marked by cracks or heaves -- and sinking basement floors due to unstable soil underneath or a foundation that wasn’t properly set when installed.

This can cause other symptoms, including:

  • Sinking, leaning or cracking walls and chimneys
  • Large window or door-frame gaps 
  • Nails popping in walls or ceilings

Built of heavy-duty even galvanized steel, Thrasher uses round shaft helical piers, resistant to bending and particularly effective in higher water tables. Like push piers solutions, helical piers can be installed internally or externally with minimal disturbance and use sections to reach depths with load-bearing soil. Because helical piers are advanced or screwed, into the soil, they do not require the weight of the structure to advance. Heavy-duty steel brackets to support the weight of the structure are placed after the helical pier is set.  Once installed, helical piers can be adjusted to return your foundation to its original position, closing cracks caused by settlement and restoring long-term integrity to your foundation.

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Cracked foundations, leaky basements and mildewy crawlspaces are often serious problems that shouldn't be ignored. If you feel you've put your repair project off long enough, financing can help you get it done now instead of later. It's not worth gambling with the investment you've made in your home!

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Frequently Asked Questions

  • Helical piers are steel-based screws with sections that are turned deep into the soil. Heavy duty even galvanized steel allows it to withstand tense foundational shifts while raising and supporting the weight of a foundation. Additionally, helical piers can be adjusted, or turned, to restore a foundation’s balance.

  • A foundation helical pier system consists of a system of helical piers installed to the correct depths at key support points in your foundation. Each helical pier starts with a screw-like section, where this pier solution gets its name, while straight, smooth sections are added to help the helical portion reach the depth it needs. A steel bracket shifts the weight of the foundation on to the pier. In an overarching pier system, push piers can also used in addition to helical piers.

  • Helical piers are often installed in sections, first with the blades screwing into the dirt. Before beginning, the soil must first be excavated for an exterior installation, or a section of the basement floor cut out in an interior installation, to allow access to the foundation footing. After the helical pier reaches a point of load-bearing soil, brackets will be attached to shift foundation weight on to the pier. Helical piers are then adjusted to help restore the foundation to its original position and provide long-term stability. 

  • Helical piers systems work best for many types of foundations, but in particular they are the best solution for lighter structures, like decks and stoops, and in cases where little soil disturbance is necessary, water tables are high, where there's little access, or where soil compression disallows for other foundation solutions. 

  • In addition to being relatively straight forward to install, helical piers take little time to install. Having to excavate soil to reach a structure's footing, installing the helical pier, attaching brackets and adjusting to repair and stabilize the foundation can take about a day for most installations. There are a number of factors that can impact the length of time it takes to install a helical pier system properly:

    • The more piers that need to be installed, whether based on the extent of the unstable soil underneath or the diameter of the structure itself
    • The depth required to reach load-bearing soil
    • The amount of adjustments and corrections required to stabilize and repair the floor 

  • Helical piers are a reliable, long-term solution, and require very little to no maintenance to maintain. When helical piers are properly installed to the correct depth, they are resistant to soil content that expands or swells based on the amount of moisture it receives. Thrasher offers a 25-year, transferrable warranty on all foundation repairs.

  • Since helical piers work beneath the ground supporting foundation floors and walls, they are not visible. When surrounding dug-up soil is moved back into place in an exterior installation and floor cut-outs have been repaired from interior installations, there's little evidence of a pier's presence around the structure. 

  • Helical piers are also referred to as helical anchors, helical piles, or screw piles.

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