FAQ

In 2026 a single crack injection typically costs $400 to $800, and most homes need two to four cracks done. Exterior waterproofing runs about $150 to $300 per linear foot. Your quote depends on wall type, access and how many cracks there are.

Usually not. Thin vertical cracks in poured concrete are normally shrinkage cracks and only a water problem. Horizontal cracks, stair-step cracks in block, cracks wider than about 6 mm, or a wall that bows inward should be looked at, and may need a structural engineer.

The spring melt saturates the soil around the foundation, and Ottawa's Leda clay drains slowly, so water sits against the wall for weeks. Freeze-thaw cycles over the winter also open existing cracks. A crack that was dry in August can leak in April.

Polyurethane is the usual choice for a leaking crack because it stays flexible and seals even when the crack is damp. Epoxy is used when the crack is dry and the goal is to bond the concrete back together. Ask a qualified contractor to explain which material suits the crack and why.

For an enquiry, include the renewal deadline, the insurer's wording, the crack location and clear photos. Ask what assessment, repair documentation and invoice details would be available before agreeing to work.

Mention whether the crack is indoors or outdoors, whether the basement is heated, and the access conditions. Ask about temperature and moisture limitations when discussing an assessment and the next step.