Groundhogs LTD is a Thunder Bay, Ontario company specializing in structural and foundation repair services. This local expert in the Foundation Supportworks network has the experience, training, and systems to solve many foundation or structural problems, including foundation cracks, settlement or sinking, bowing or buckling basement walls, and more. They are committed to doing the job right, on time, and within budget.

Your local Foundation Supportworks dealer in Northwestern Ontario offers these benefits and more:

  • Exclusive, Proven Foundation Repair and Structural Support Systems
  • Trained, Experienced Foundation Repair and Structural Specialists
  • 25-Year Manufacturer's Product Warranties
  • Free, No-Obligation Evaluations and Estimates


  • Foundation Repair for residential and commercial buildings fixes and prevents foundation and structural problems, including foundation cracks, leaks, settling, sagging floors, bowing or buckling walls, or other foundation damage.
  • Other Services: Waterproofing and drainage, driveway repair and replacement, lot grading, septic system solutions, excavation, and water and sewer line repair or replacement.

Products Installed:

  • Push Piers
  • GeoLock™ Wall Anchors
  • PowerBrace™ Wall Repair System
  • EverBrace™ Wall Repair System

Service Area:

Proudly serving Northwestern Ontario, including Thunder Bay, Sault Ste Marie, Sudbury, North Bay, Timmins, Greenstone, Dryden, Atikokan, and surrounding areas.

Free Foundation Repair Estimates in Northwestern Ontario

Contact Groundhogs to solve your foundation or structural problem. As a Foundation Supportworks dealer, Groundhogs offers an exclusive selection of highly engineered products that aren't available to other contractors. More importantly, they provide a permanent solution that they will back up with a transferable warranty.

Fix your foundation and breathe easy, starting with a free evaluation and estimate!

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By Kristine ..
"I needed a smaller job (one day) and they were able to come..."
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By Jeremy K.
"I dealt mainly with Rob, and they were great. They replaced..."
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By Nathan A.
"Amazing service and great work, always on time and..."

Before & After

Groundhogs Before & After
  • EverBrace


    The foundation on this home was failing and shearing from the footing below. We installed the EverBrace system to permanently stabilize the foundation for many years to come!
141 A Frederica St W
Thunder Bay, ON P7E 3V8
Mon-Fri 9:00am-5:00pm