Wet Basement Repair

Stop Water from Entering Your Basement

A wet basement is one of the most common and costly problems Ontario homeowners face. Whether you're seeing damp walls, puddles on the floor, or white chalky deposits (efflorescence), these are all signs that water is penetrating your foundation. Left untreated, moisture intrusion leads to mould growth, structural damage, and reduced home value.

At Maximum Contracting, we diagnose the root cause of your basement water problems — not just treat the symptoms. We've waterproofed hundreds of homes across Ontario with lasting results.

Common Causes of Wet Basements

• Failed or non-existent exterior waterproofing membrane
• Blocked, collapsed, or absent weeping tile drainage systems
• Cracks in poured concrete or concrete block foundation walls
• High water table or hydrostatic pressure against foundation
• Poor grading or improper downspout drainage around the home
• Window well flooding or leaking basement windows
• Sewer backup or floor drain overflow
• Cold joints or honeycomb voids in poured concrete

Our Wet Basement Solutions

• Interior waterproofing: Drain tile systems, waterproofing membranes applied to interior walls, and sump pit/pump installation
• Exterior waterproofing: Full excavation and application of rubberized asphalt membrane, drainage board, and new weeping tile
• Crack injection: Polyurethane foam or epoxy injected into cracks to create a permanent watertight seal
• Window well drainage: Proper draining gravel beds and covers to prevent pooling
• Grading correction: Re-sloping soil around foundation to direct water away