This study empirically verified the ability of emergency extinguishing equipment installed on the east coast of Gangwon-do to protect private houses and facilities that are adjacent to forest. A simulated wildfire was used to confirm the equipment’s effectiveness by analyzing the ignition of nearby homes and facilities, the spread of flames, and the fire characteristics in the presence of flying sparks. The experiment was repeated a total of four times by applying a preemptive water stream from the emergency extinguishing equipment onto the roof and wall of the facility. The experimental results showed, distinct differences in the ignition time, combustion range, and temperature distribution of the facility depending on whether it was exposed to a preemptive water stream. It was confirmed that the preemptive water stream had a significant effect on preventing the spread of combustion and establishing the initial golden time for the fire.