Loretto

Helical piles in Loretto, Minnesota

Minnesota's ground was shaped by glaciers, and the Minnesota DNR describes the former bed of glacial Lake Agassiz as a mix of sandy deposits, loamy till, and clay and silt. Soft, wet or variable soil like this is a common reason foundations settle.

Frozen ground adds a second problem by heaving shallow footings. Under Minnesota Rules 1303.1600, the minimum footing depth for frost protection is 3-1/2 feet in southern Zone II and five feet in northern Zone I, unless an engineer determines otherwise. Helical piers are screwed through weak surface soil to bear on firmer layers.

Helical pile companies serving Loretto

The listed company based in Loretto:

• SPTech Helical Piers: installs PierTech helical piers for decks and home support, and distributes them to certified installers in Minnesota and Wisconsin.

Costs and what to ask

Nationally, helical piers typically run about $2,000 to $4,000 each installed, with an average near $3,000 per pier, according to Foundation Repair HQ. The same guide notes that hand-digging around landscaping or structures can add $200 to $500 per pier. A Loretto job depends on how deep the stable layer is, how many piers are needed and site access. See our helical pier cost guide.

Questions to put to any installer in Loretto:

• Will a licensed engineer specify the pile depth and design load for my Loretto property?
• Can you share installation torque logs for each pile once the work is done?
• What shaft size is used, and is the steel galvanized for long-term corrosion protection?
• Who pulls the Loretto building permit, and what warranty covers the work?

Get written quotes from at least two companies and ask each to explain how the pier count and depth were determined.

For more companies and state-level guidance, see Minnesota helical pile installers.