1 2 3 4 5 Bituminous systems are one of the most widely used waterproofing methods for roofs. The bitumen is modified with polymers to increase its elasticity and longevity. Liquid waterproofing membranes are applied as a liquid material to become a seamless and flexible membrane on the rooftop after curing. 4 TYPES OF WATERPROOFING SYSTEMS FOR ROOFS mepjournal.com Bituminous waterproofing systems Liquid-applied roof leakage solution Cementitious waterproofing involves the application of cement-based waterproofing roof coating to concrete roof slabs to protect them from water infiltration. Cementitious roof leakage solution Sheet membrane roofing systems comprise preformed sheets that are made from synthetic or polymer materials, and these sheets are applied on the surface of the roof. Sheet membrane roof leakage solution Also, check out the complete guide to water pipe corrosion here