Steps for High-Pressure Washing an RC Roof Safety Preparations: Electrical Safety: Since this is power room one must ensure all electrical power is switched off otherwise make sure the electrical facilities are well protected by waterproofing. ref: reinforced concrete (RC) roof. Personal Protective Equipment (PPE): Able-bodied employees should be permitted to work untied and are encouraged to wear protective gears which includes helmets, gloves, goggles and waterproof boots. Work Area Protection: Make sure no equipment or other materials which