Waterproofing refers to the process of making a structure or surface resistant to the penetration of water, thereby preventing water ingress and protecting the building components from damage caused by moisture. It is an essential part of building construction and maintenance, especially in areas prone to water exposure such as basements, roofs, bathrooms, and terraces. The primary goal of waterproofing is to create a barrier that blocks water from entering the structure, thus enhancing durability, preventing mold and mildew growth, and maintaining the structural integrity of the building. Waterproofing is crucial in basements because these spaces are typically located below ground level, making them susceptible to water seepage through soil moisture, groundwater, and rainfall infiltration. If water penetrates the basement walls or floor, it can cause dampness, weaken the foundation, damage interior finishes, and create unhealthy living conditions. Therefore, an effective waterproofing system is necessary to protect basements from water-related problems. The procedure for waterproofing a basement generally involves several key steps: 1. Site Preparation and Surface Cleaning Before starting waterproofing, the basement surfaces must be thoroughly cleaned and prepared. Any