Interior Waterproofing in Toronto

Interior waterproofing manages water after it reaches the foundation. A perimeter drain is installed inside the basement along the footing, and it carries the water to a sump pit. A pump then moves the water out through a discharge line.

It is the option most often chosen when excavating the outside is not practical. It does not stop water pressure from reaching the wall, so the drain and sump have to be designed and maintained properly.

What an interior system includes

A complete interior system has a few parts that each need to be specified in the quote. The drain collects water at the footing, the sump holds it, and the pump moves it to the discharge point.

• Perimeter drain along the footing, with the floor cut and restored.
• Sump pit and a primary pump, with a check valve and discharge line.
• Battery backup or a second pump, where power loss or heavy rain is a risk.
• Discharge that runs away from the foundation, not back toward it.

When interior is the better route

Interior systems are a fit when the outside is blocked by a deck, a finished patio, a property line, or a deep footing. They are also used when the water problem is limited to certain walls.

If the main issue is a single active crack, crack repair may be enough. Ask the contractor to explain why the proposed route suits your home.

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