Exterior Basement Waterproofing in Windsor, Ontario

What It Is

Exterior basement waterproofing addresses the problem from outside your home: excavating along the foundation wall down to the footing, applying a waterproof membrane directly to the foundation, installing or replacing exterior weeping tile, and re-grading so water drains away from the house instead of toward it. It's a bigger job than interior waterproofing — typically several days depending on scope — but it's the right call when water is actively pooling against the foundation, when an existing exterior membrane has failed, or when a structural issue needs to be addressed from outside at the same time.

Why This Fix (vs. interior)

Exterior waterproofing fixes the source — water never gets to the foundation wall in the first place. It's the right choice when there's visible pooling against the house, a failed old membrane, efflorescence combined with actual structural concerns, or when grading/downspout issues are part of the root cause. It costs more and takes longer than an interior system, which is why we only recommend it when the inspection actually points to it.

Signs You Need This

• Visible water pooling against the foundation after rain
• A basement wall that's damp or leaking even without an obvious crack
• An older home with a foundation membrane that's likely 20+ years old and never replaced
• Interior fixes attempted previously that didn't resolve the problem