Concrete sealing Washington, DC. is a protective treatment applied to concrete surfaces, such as driveways, sidewalks, and patios, to prevent moisture penetration, resist stains, and enhance the durability and longevity of the concrete. This process involves applying a sealant, often in the form of a clear or colored liquid, which forms a protective barrier on the concrete's surface, helping to maintain its appearance and structural integrity in the face of the region's climate and environmental conditions