TL;DR For most South African flat roofs in 2026, liquid waterproofing is the superior choice: Lasts Longer: 10–15 years (vs. 5–10 for torch-on). Fewer Leaks: Seamless application with no joints, overlaps and outlet termination points to fail. Safer: Eco-friendly, No open flames or fire risk. Cheaper Repairs: The ArmTec HyperFlex Torch-On Repair System is applied