One of the problems at any construction site or in any building is that of water leakage. Leaking water not only damages the structures but it also damages the aesthetic look of the structure. Water leakage causes growth of fungus and algae; it also causes dampness and leads to the peeling of paint. Over a period of time water leads to structural damage. Even though there are many waterproofing products available in the market today, the problem of water leakage still exists, and the various stakeholders such as the real estate developers, the contractors, the end customers, are always looking out for a product that would solve the problem effectively and still be affordable. It is very important to evaluate the techno-commercial aspects of any product before using it. The roof covering materials, siding, foundations, and all of the various penetrations through these surfaces must be water-resistant and sometimes waterproof.