The Jabatan Kerja Raya (JKR) prefers to use polyurea as a waterproofing solution for concrete rooftops because of its superior performance, durability, and speed of application compared to conventional systems. Polyurea forms a seamless, fully adhered, and highly elastic membrane that can withstand thermal expansion, structural movement, and harsh weather exposure without cracking or delamination. Its rapid curing time—often within seconds—minimizes project downtime and allows faster completion, which is especially beneficial for large-scale government projects. Additionally, polyurea offers excellent chemical and UV resistance, ensuring long-term protection of the concrete substrate and reducing maintenance costs over the structure’s lifespan.