Water is a persistent source of masonry deterioration. Moisture can enter through joints, cracks, porous surfaces, and runoff. Once inside, it can cause problems beyond visible staining. Waterproofing should focus on controlling water at its source. Assessment should come before treatment. Why masonry absorbs moisture Brick, stone, mortar, and concrete masonry contain tiny pores. Rain can enter through these openings. Wind can drive moisture deeper into vulnerable joints and
