A practical comparison of interior and exterior basement waterproofing for North York homes, including when each approach makes the most sense.
Two different jobs
Interior waterproofing manages water after it reaches the foundation. Exterior waterproofing prevents it from reaching the wall in the first place. Neither is universally better — they solve different parts of the same problem.
When interior work fits
Interior systems suit homes where excavation is blocked by driveways, porches, mature landscaping, or narrow lot lines, and where the foundation itself is structurally sound.
When exterior work fits
Exterior work is the stronger choice when foundation walls need repair, when weeping tile has failed, or when grading and downspouts also need correcting. It handles several water sources in one project.
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