What is Roof Waterproofing sealant Method ? Epoxy sealant method: Epoxy acrylic sealant method in Singapore is ideal waterproofing sealing method for basement and any reservoir like water tanks. Cementitious sealant method: Cementitious sealants are ideal for working with swimming pools, basements other interior or exterior assemblies composed of tiling or tile-based substrates. We also produce cementitious products that are formulated specifically to combat positive water pressure. Bitumen