SikaTop Seal 107 is a two-component, polymer-modified cementitious slurry designed primarily for waterproofing and protective sealing of concrete and mortar structures. It consists of a cement-based powder and a liquid polymer emulsion, which when mixed, create a flexible coating that provides an effective barrier against water penetration, chlorides, and carbonation. This makes it ideal for sealing surfaces in wet areas like bathrooms and balconies, as well as critical structures such as potable water tanks, swimming pools, basements, and retaining walls. Its key function is to form a durable, watertight layer that also offers slight crack-bridging capabilities to protect the underlying substrate from degradation.