What Is Interior Waterproofing?
Interior waterproofing manages water that has already entered or is attempting to enter your basement from the inside. Rather than stopping water at the exterior wall, interior systems intercept moisture at the point of entry and redirect it safely away from your living space using drains, channels, and sump systems.
It is one of the most effective, cost-efficient, and minimally disruptive approaches to basement water management — and when installed correctly by experienced professionals, it delivers decades of reliable protection.
Our Interior Waterproofing Solutions
At GTA Foundation Experts, we offer a full range of interior waterproofing services tailored to your property’s specific needs:
- Interior drainage channel installation along the perimeter of basement walls.
- Sub-floor drainage systems to capture and redirect water beneath the slab.
- Wall membrane and vapour barrier installation.
- Crack sealing and hydraulic cement application.
- Sump pump installation and integration.
- Floor drain installation and maintenance.
- Dehumidification system setup and recommendations.
Every solution is custom-designed based on a thorough assessment of your basement, soil conditions, and water entry points.
Our Process
Inspection & Assessment
We perform a detailed evaluation of your basement to identify all water entry points and moisture sources.
Custom Solution Design
Our team develops a waterproofing plan matched to your specific property and budget.
Interior Drainage Installation
 We install drainage channels, membranes, and barriers with minimal disruption to your home.
Sump Pump Integration
Where required, we connect your drainage system to a professionally installed sump pump for active water removal.
Final Testing & Review
We thoroughly test the entire system before completing the job and walk you through everything installed.