How to Waterproof Basement Walls From the Inside

Basement walls are almost always built using masonry materials like concrete or concrete block, and while these materials are generally stronger than others, they are porous and can absorb moisture from surrounding soil. The absorption of moisture from the soil can lead to water damage and an effect known as efflorescence (sodium stains). The best way to prevent this is sealing the exterior foundation walls, but this can prove to be an extensive task once the structure is complete; sealing the inside of the walls is the next best prevention method and is a straightforward task.