Foundation Crack Repair Windsor Homeowners Trust

What It Is

Most residential foundation cracks are non-structural (shrinkage cracks that form as concrete cures) but still let water in over time. We repair them with polyurethane or epoxy injection — a low-viscosity resin is injected directly into the crack under pressure, filling it completely from the inside out, including any hairline branches a surface patch would miss. Polyurethane is typically used for actively leaking cracks (it expands and stays flexible), while epoxy is used where structural bonding strength matters more than water-sealing flexibility. We'll tell you which applies to your situation during the free inspection.

Why Injection (vs. a surface patch)

A surface patch (hydraulic cement smeared over the visible crack) only addresses what's visible on the surface — water pressure behind the wall (hydrostatic pressure) will often find its way around or through a surface patch over time. Injection fills the entire depth of the crack, which is why it holds up long-term rather than needing to be redone in a year or two.

Signs You Need This

• A visible crack in a poured concrete foundation wall, especially one that's damp or actively dripping
• A crack that seems to widen slightly after heavy rain
• A previous surface patch that's failed or is leaking again
• Efflorescence tracking specifically from one crack location