Understanding Foundations in Winnipeg Homes: What Every Buyer Needs to Know

Common Foundation Types in Winnipeg

• Poured Concrete

  The most common foundation in modern homes, poured concrete offers strength and durability. It’s known for fewer joints, making it less prone to water intrusion when properly installed.

• Concrete Block (CMU Block)

  Common in homes built from the 1950s–1980s, block foundations are stacked and mortared. While sturdy, they have more joints and can develop step cracks.

• Fieldstone / Stone Foundation

  Found in century homes and older properties, these consist of rounded stones mortared together. They’re charming but require vigilant maintenance.

• Preserved Wood Foundation (PWF)

  Pressure-treated wood is used for both walls and footings. PWFs can perform well when properly drained and waterproofed, but they require specific maintenance.

• Post and Pad Foundation

  Common in cottages and older homes, this system uses concrete pads supporting wood or steel posts. It’s inexpensive but offers limited lateral stability.

• Piled Foundation

  Steel or concrete piles driven deep into the ground support the foundation, especially in areas with poor soil. It’s a modern and highly stable system, often used for custom builds.

Understanding Foundation Cracks in Poured Concrete

Even the best-built foundations can develop cracks over time. It’s important to distinguish between vertical and horizontal cracks.

• Vertical Cracks

  These are often caused by shrinkage during curing or minor settlement. Most are cosmetic, especially if they’re narrow (<1/8 inch), but they should be monitored. If water infiltration occurs, a professional can apply a flexible sealant or an epoxy injection.

• Horizontal Cracks

  These are more serious. They usually result from hydrostatic pressure — the outward force of wet soil pushing against the wall. Horizontal cracks can indicate structural stress and warrant prompt professional assessment.

When Is Bracing Needed?

If a horizontal crack is present, particularly if it’s bowing inward, structural bracing may be required. Common solutions include:

• Steel Beam Bracing

  Vertical steel beams are anchored to the floor and joists, holding the wall in place to prevent further movement.

• Carbon Fibre Straps

  A modern, non-invasive option where high-strength straps are epoxied to the wall to reinforce it.

• Blueskin Waterproofing Treatment

  On the exterior, Blueskin (a rubberized waterproof membrane) is often applied after excavation to stop water infiltration and protect repaired areas.

Should You Buy a Home With Foundation Cracks?

The short answer: It depends on the severity and professional assessment.

• Vertical cracks are often non-structural and can usually be repaired easily.
• Horizontal cracks require a structural evaluation, but many homes have been successfully stabilized and lived in safely after repair.
• Always involve a qualified home inspector or structural engineer before purchase, and factor potential repair costs into your negotiations.