Waterproofing agents are substances used to make materials resistant to water penetration. They can be applied to various surfaces, including concrete, wood, and fabric, to protect them from moisture damage. These agents work by creating a barrier that repels water, preventing it from seeping through and causing deterioration. There are different types of waterproofing agents, such as sealants, coatings, and membranes. Each type has specific applications and benefits, depending on the material and the environment. For example, silicone sealants are often used in bathrooms, while bituminous membranes are commonly applied to roofs for long-lasting protection against water.