Our Services
- Residential Plumbing Services
- Commercial Plumbing Services
- Commercial Drain and Sewer Maintenance
- New Construction Plumbing
- Catch Basin Installation
- Emergency Plumbing and Drain Services
- Main Water Line Replacement
- Interior and Exterior Basement Waterproofing
- Sump Pit and Sump Pump Services
- Backwater Valve Installation
- Main Drain Repair and Replacement
- Drain Snaking and Power Washing
- Main Drain Camera Inspection
- Drain Cleaning and Unclogging
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Don’t wait for a small kitchen issue to become a bigger repair. Tell us what’s happening, and our team will help you get the right fix quickly and cleanly.

Interior and Exterior Basement Waterproofing in Toronto and York Region
Basement water intrusion can damage finishes, belongings and building materials. The best solution depends on how water is entering the property and the condition of the foundation and surrounding drainage.
Topline Drain and Plumbing provides interior and exterior basement waterproofing services for properties in Toronto and York Region. We can discuss the symptoms and the appropriate options for investigating and addressing the problem.
Signs of Basement Water Intrusion
Possible signs include damp walls, water stains, musty odours, visible seepage, puddles after rainfall or recurring moisture near the floor. These symptoms can have different causes, so identifying the source is important before selecting a solution.
Interior Basement Waterproofing
Interior approaches may help manage water that reaches the inside of a basement, depending on the property’s conditions and the system selected. The appropriate approach requires an assessment of where water enters and how it can be safely managed.
Exterior Basement Waterproofing
Exterior waterproofing may be considered when water is entering through foundation walls or related exterior areas. The scope can depend on excavation access, foundation condition, drainage and site constraints.
Not every property requires the same method. A suitable recommendation should reflect the cause of the intrusion and the available options.
The Role of Drainage and Sump Pumps
Foundation drainage, grading, downspout discharge and sump pump arrangements may affect basement moisture. Waterproofing decisions should consider the broader water management conditions rather than focusing on one symptom alone.
Choosing a Suitable Waterproofing Solution
Before work begins, discuss the suspected source of water, the proposed method, access and restoration requirements, expected disruption and any limitations. Ask which conditions the proposed work is intended to address.