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The most recognized brand in basement wall waterproofing — the Extreme formulation offers 15 PSI hydrostatic pressure resistance versus 10 PSI in standard Drylok, making it appropriate for walls subject to active seepage from high water tables. Applies like paint with a brush or roller, cures to a textured white surface that can be repainted. One gallon covers approximately 75–100 sq ft per coat; two coats recommended.
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