Waterproofing Old Basement Walls (Exterior + Interior Options)

Old basements are often a source of leaks and moisture, and attempting to waterproof and seal them can be an exercise in futility. The only way to reliably waterproof basement walls is to combine the waterproofing with coupled with good drainage. Ideally, we want to address drainage and water management on the exterior to prevent water from challenging the foundation walls, however, this isn't always possible. If waterproofing and drainage cannot be provided on the exterior, an interior drainage strategy must be implemented to prevent water from leaking into the interior of the basement by uncoupling the masonry wall from the new interior framed walls. This prevents trapped moisture from flooding the basement, sustaining mold growth behind finishes, and helps to counter efflorescence, subflorescence, and spalling from repeated evaporation. In this video, we walkthrough waterproofing and drainage strategies for old basements to help you determine what is the right solution is for your project.

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