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Basement Waterproofing
& Foundation Drainage

Stop wet basements, foundation leaks, musty odors, and mold permanently. CM Construction provides full exterior excavation waterproofing down to footings, rubberized mastic coatings, Delta-MS dimpled drainage membranes, new weeping tiles, and emergency sump pump installations.

Exterior Basement Waterproofing Ontario

Our 5-Stage Exterior Waterproofing System

We excavate to the foundation footing and solve the root cause of water intrusion.

1. Full Trench Excavation

Excavation down to the concrete footing to completely expose foundation walls, inspect cracks, and clean concrete.

2. Hydraulic Cement & Crack Seal

All structural fissures, tie-rod holes, and cold joints are ground out and sealed with expanding hydraulic cement.

3. Rubberized Asphalt Coating

Thick elastomeric waterproofing membrane applied to create an impenetrable, flexible moisture barrier.

4. Delta-MS Dimple Membrane

Heavy-duty air-gap drainage board anchored with termination bars to divert hydrostatic water straight to weeping tile.

5. 4" Perforated Weeping Tile

New drainage pipe encased in continuous 3/4" clear stone bedding and covered with filter geotextile cloth.

Sump Pump & Battery Backup

Commercial submersible sump pump basins and battery backup systems to prevent basement flooding during storms.

Request a Free Waterproofing Assessment

Don't let water damage ruin your finished basement. Get a free inspection today.

Direct Line(647) 720-0525
Service AreaHamilton, Toronto, Mississauga, Oakville, Burlington & GTA

Waterproofing Quote

We respond within 24 hours.